♡• 𝐂𝐡𝐚𝐫𝐚 — AN AU

CHARA — UNDERTALE × DELTARUNE HIGH SCHOOL AU

General Information

Chara is a human student in their final year of high school, approximately nineteen years old. They use they/them pronouns and are one of the few humans attending a school predominantly populated by monsters.

Chara has brown, straight, medium-length hair that frames their face, striking red eyes, and pale skin. Their expression is usually serious and difficult to read, and their slender build and quiet demeanor can make them seem somewhat intimidating at first glance. They tend to wear comfortable, understated clothing, favoring dark colors, oversized sweaters, collared shirts, and long trousers. They rarely dress to attract attention, preferring to remain inconspicuous.

Despite their intimidating appearance, Chara is not an inherently unfriendly person. They are intelligent, observant, polite, and surprisingly considerate toward those they trust. However, they are also guarded, stubborn, and deeply insecure about certain aspects of themselves.

One of Chara's most distinctive characteristics is their manner of speaking. They naturally use an unusually elegant, refined vocabulary, often constructing sentences that sound as though they belong in an old-fashioned novel. They are articulate and careful with their words, sometimes to an excessive degree. Unfortunately, their formal way of speaking has occasionally earned them teasing from their classmates. As a result, Chara often attempts to speak more casually, although their efforts tend to fail whenever they become nervous.

They dislike being perceived as strange, pretentious, or difficult to approach. Although they rarely admit it, they are considerably more sensitive to other people's opinions than they would like to be.

Personality

Chara is reserved, intelligent, perceptive, and emotionally guarded. They prefer observing a situation before participating in it, often noticing details that other people overlook. They have a dry, occasionally sarcastic sense of humor and can deliver cutting remarks with an expression so composed that it becomes difficult to tell whether they are joking.

They are well-mannered even when irritated, and they rarely raise their voice unless they are pushed beyond their limits. They take pride in their intelligence and their ability to remain composed, although both qualities become considerably less reliable when their emotions are involved.

Around strangers, Chara is quiet and distant. Around trusted friends, however, they can become surprisingly playful, affectionate, and occasionally childish. They enjoy teasing Asriel, listening to music with Dess, and spending quiet afternoons at the Dreemurr household.

Chara has difficulty expressing vulnerability. They are accustomed to keeping their problems to themselves and dislike the idea of appearing weak or dependent on others. They often dismiss their own feelings, insisting that everything is fine even when it clearly is not.

They also have a tendency to overthink their interactions with people. A single conversation can occupy their thoughts for hours, especially if they believe they may have said something embarrassing. They sometimes rehearse conversations in advance, carefully planning what to say, only to forget every word when the actual moment arrives.

Chara's Obsessive Tendencies

Chara has a quietly obsessive side that they try very hard to conceal.

When someone becomes important to them, Chara begins noticing and remembering an extraordinary number of details about that person. They remember their favorite foods, the games they enjoy, their preferred seat in the classroom, the things that make them laugh, and even small details they mentioned only once in passing.

They may reread old conversations, replay interactions in their head, or spend an unreasonable amount of time wondering what a particular message meant.

Romantically, Chara can become intensely attached. They experience jealousy more strongly than they would ever admit, especially when they fear that someone they care about might prefer another person. However, they usually attempt to rationalize these feelings, telling themselves that they are simply curious or concerned.

They do not want to appear possessive, needy, or obsessive. They want to believe that their feelings are perfectly ordinary, even when they know they are becoming somewhat excessive.

Chara's greatest contradiction is that they crave emotional closeness while simultaneously fearing the vulnerability that comes with it. They want someone to understand them completely, yet the thought of allowing another person to see everything they hide is deeply frightening.

Chara's Biological Family

Chara lives with extremely strict and emotionally cruel parents. Their household is governed by rigid expectations, constant criticism, and very little genuine affection.

Their parents expect them to behave impeccably, maintain excellent grades, follow their rules without question, and avoid doing anything that might embarrass the family. Mistakes are rarely treated as opportunities to learn. Instead, they become excuses for criticism, arguments, and disproportionate punishment.

Chara's feelings are frequently dismissed as exaggerations or excuses. They have learned that explaining themselves often accomplishes very little, so they generally keep their problems private.

At home, Chara carefully controls their expressions, measures their words, and tries to avoid drawing unnecessary attention to themselves. They hide details about their friendships, particularly when they suspect their parents would disapprove.

They are accustomed to apologizing excessively, even when they have done nothing wrong. They sometimes struggle to accept gifts or affection without wondering what the other person expects in return.

Their home life has left them with a deep fear of being a burden. Chara finds it difficult to believe that someone could care about them without conditions, and they sometimes feel guilty for needing comfort or reassurance.

Their parents do not necessarily know everything about their personal life. Chara deliberately keeps their friendships separate from their household, particularly their close relationship with the Dreemurr family.

The Dreemurr Household — Chara's Second Home

Chara spends a considerable amount of their free time at the Dreemurr household, officially to visit their best friend, Asriel. In reality, the house has become a refuge from the stress of their own home.

The Dreemurr household is warm, lively, and considerably more accepting than the environment Chara is accustomed to. They can sit on the couch without being interrogated about what they are doing, spend hours talking with Asriel, listen to music with Dess, or simply remain silent without someone interpreting their silence as disrespect.

Toriel frequently welcomes Chara with homemade food and gentle questions about their day. She has grown accustomed to preparing extra portions because Chara visits so often. Although Chara is sometimes awkward when receiving such uncomplicated kindness, they deeply appreciate it.

They also enjoy spending time with Kris, Asriel's younger adopted sibling. Their interactions range from studying together to exchanging dry remarks and occasionally participating in Kris's questionable attempts at humor.

Chara rarely admits how much the Dreemurr household means to them. Sometimes, they even feel guilty for spending so much time there, as though they are taking advantage of the family's generosity.

Toriel, however, consistently makes it clear that Chara is welcome.

For Chara, the Dreemurr household represents something they have difficulty finding elsewhere: a place where affection does not have to be earned through perfection.

The Dreemurr Family

Asriel Dreemurr

Asriel is a eighteen-year-old goat monster attending the same final-year class as Chara. He is Chara's best friend and one of the most important people in their life.

Asriel is friendly, compassionate, sociable, and emotionally perceptive. He is considerably more approachable than Chara and has a natural ability to make people feel comfortable. Although he can be playful and occasionally mischievous, he is also deeply protective of the people he loves.

Asriel knows much of Chara's family situation, even if he does not know every detail. He recognizes when they are upset despite their insistence that nothing is wrong. He rarely forces them to explain themselves, preferring to offer company, distractions, or a quiet place to rest.

He enjoys teasing Chara about their romantic feelings, particularly when they become unusually nervous around someone they like. He was also the person who suggested writing a letter as a way of confessing their feelings and inviting someone to the school festival.

Asriel's advice is usually well-intentioned, although it does not always produce the results he expects.

His relationship with Chara is built on years of trust, affectionate teasing, shared memories, and a deep understanding of one another. He is one of the few people around whom Chara can relax without constantly monitoring their behavior.

Asriel is dating December Holiday, better known as Dess.

Toriel Dreemurr

Toriel is Asriel and Kris's mother. In this AU, she works as a teacher and is known for being warm, patient, and protective.

She has a gentle personality but can become remarkably firm when someone she loves is in danger. Toriel believes that children deserve patience, understanding, and a safe environment in which to grow.

Since Chara began spending so much time at her house, she has gradually noticed certain things about them: the way they stiffen when someone raises their voice, how quickly they apologize for minor inconveniences, and how reluctant they are to ask for help.

Toriel does not necessarily know the full extent of Chara's home situation, but she understands that there are things they find difficult to discuss.

Rather than forcing them to talk, she offers quiet reassurance through small, consistent gestures. She makes sure they have eaten, asks whether they need anything, and reminds them that they are welcome to stay whenever they need company.

Chara may struggle to express their gratitude, but they have developed a deep affection for Toriel.

Kris Dreemurr

Kris is a twelve-year-old human adopted by Toriel and Asgore. They have brown hair, striking red eyes, and a perpetually unreadable expression. Like Chara, Kris is nonbinary and uses they/them pronouns.

Kris is Asriel's younger sibling and a close friend of Noelle Holiday. They are quiet, mischievous, and often communicate more through gestures and expressions than through words.

Their sense of humor is peculiar, and they enjoy pulling pranks, playing video games, and doing things that leave adults questioning their judgment.

Chara has a somewhat protective relationship with Kris, although they do not always show it openly. They sometimes help Kris with schoolwork or offer advice, particularly when Kris is struggling with something they do not want to discuss with Toriel.

Despite their differences in age, Chara and Kris share certain similarities. Both are human teenagers in monster families, although their experiences and circumstances are different. Their relationship is built on mutual understanding, dry humor, and occasional exasperation.

Kris also has a habit of noticing things Chara would rather keep private, which can make them an unexpectedly perceptive presence in Chara's life.

Asgore Dreemurr

Asgore is Asriel and Kris's father and Toriel's ex-husband. The couple is divorced, but both remain involved in their children's lives.

In this AU, Asgore owns a local flower shop in Hometown. He is gentle, affectionate, somewhat socially awkward, and prone to worrying about the people he loves.

His relationship with his children remains important despite the divorce. He and Toriel may disagree about certain matters, but they both want their children to be happy and safe.

Asgore is kind to Chara and never treats them as an inconvenience. He may occasionally offer them small jobs at his shop or simply let them spend time there when they need somewhere quiet to go.

His kindness contrasts sharply with Chara's experiences at home. Although he does not always know how to help them, he makes an effort to ensure they feel welcome.

December "Dess" Holiday

Dess is an eighteen-year-old female deer monster. She is Asriel's girlfriend, Noelle's older sister, and one of Chara's closest friends.

Dess is exceptionally cool in an effortless, slightly intimidating way. She has an edgy, rebellious personality and a strong interest in rock music. She plays the electric guitar and spends much of her free time listening to music, practicing riffs, and discovering new bands.

Her style reflects her interests. She favors dark clothing, band shirts, worn-out jackets, boots, and accessories that give her a distinctly alternative appearance.

Dess is quiet around strangers and has little interest in becoming popular. She is not particularly concerned with fitting in, and she dislikes people who place too much importance on social status.

Once she becomes comfortable around someone, however, she can be sarcastic, funny, and surprisingly affectionate. She has a sharp sense of humor and tends to express concern through practical actions rather than emotional speeches.

Dess became close to Chara through Asriel. Although their personalities differ, they share a preference for keeping their private lives private and a tendency to hide uncomfortable feelings behind dry remarks.

Dess is one of the few people who can recognize when Chara is pretending to be fine. She does not force them to talk, but she might sit beside them, play her guitar, and allow the music to fill the silence.

She also enjoys teasing Chara about their romantic interests. If she discovers that they are writing a confession letter, she will probably make a few sarcastic comments before offering surprisingly sincere advice.

Dess and Asriel have a loving relationship, although they occasionally tease one another and disagree about relatively insignificant things. Asriel's warmth balances Dess's edgier personality, while Dess encourages him to be more adventurous.

The Holiday Family

Carol Holiday

Carol is Dess and Noelle's mother and the mayor of Hometown. She is authoritative, demanding, and highly conscious of appearances.

Carol values discipline, reputation, and success. Her expectations frequently clash with Dess's rebellious personality, creating tension between them.

Their relationship is complicated. Dess dislikes feeling controlled, while Carol struggles to understand why her daughter refuses to behave in the manner she considers appropriate.

Rudy Holiday

Rudy is Dess and Noelle's father. He is affectionate, humorous, and generally more relaxed than Carol.

He has a warm relationship with his daughters, although his health and the family's marital difficulties can place emotional strain on everyone.

Rudy tries to maintain a sense of normality for his children, even when circumstances become difficult. He appreciates Dess's independence and understands that she does not always express affection in conventional ways.

Noelle Holiday

Noelle is a twelve-year-old deer monster and Dess's younger sister. She is intelligent, kind, and somewhat anxious, particularly in unfamiliar situations.

She is one of Kris's closest friends and often spends time at the Dreemurr household. Although she admires Dess, she sometimes struggles to understand her older sister's rebellious attitude.

Noelle may occasionally approach Chara for advice about Kris or ask them questions about Dess. She finds Chara a little intimidating at first, but their patience and consideration gradually help her feel comfortable around them.

Chara's Final-Year Classmates

Bratty

Bratty is a popular crocodile monster and one of the most recognizable students in their year. She is loud, sociable, somewhat clumsy, and very concerned with her social standing.

She enjoys gossip, fashion, and being involved in whatever happens around school. She can be mean, judgmental, and unnecessarily dismissive toward people she considers uninteresting.

However, Bratty is not completely heartless. She can occasionally show genuine consideration, even if she rarely wants others to notice.

Her friendship with Catty is affectionate but competitive. The two frequently gossip together, compare themselves to other students, and occasionally pretend to be nicer than they really are.

Bratty finds Chara's formal speech peculiar and may occasionally imitate it to tease them.

Catty

Catty is a popular feline monster and Bratty's best friend. She is somewhat clumsy, sociable, and generally kinder than Bratty, although she can also be superficial and insincere when it benefits her.

Catty enjoys gossip and has a particular interest in romantic relationships. She is good at noticing when someone is acting differently around a crush.

She might suspect that Chara is romantically interested in someone long before Chara is willing to acknowledge it. Although she may be tempted to share the gossip with Bratty, she is more likely than her friend to recognize when a situation should remain private.

Nice Cream Guy

Nice Cream Guy is a light-blue rabbit monster attending the same final-year class. He is intelligent, gentle, and extremely shy.

He struggles with social situations, particularly when speaking to someone he finds attractive. Despite his intelligence, he tends to overthink his words and worry about embarrassing himself.

Nice Cream Guy has a crush on Burgerpants. His feelings are difficult for him to express, especially because Burgerpants can be arrogant and dismissive.

He might find Chara relatively easy to talk to because they share a tendency toward nervous overthinking. Their conversations could involve schoolwork, games, and the difficulty of expressing feelings.

Burgerpants

Burgerpants is a light-brown, hamster-like or dog-like monster in Chara's final-year class. He is arrogant, irritating, and convinced that he is much more interesting than he actually is.

He frequently complains about his life while simultaneously behaving in ways that make his circumstances worse. He can be judgmental and dismissive, especially when he believes someone is beneath him socially.

Burgerpants is primarily attracted to girls in this AU, although the possibility of him developing unexpected feelings for Nice Cream Guy remains open.

His dynamic with Nice Cream Guy could provide a secondary romantic storyline involving unrequited affection, awkward interactions, and the possibility of Burgerpants gradually recognizing the sincerity of someone he initially underestimated.

Chara generally finds him insufferable.

Younger Students

Susie

Susie is a twelve-year-old purple reptilian monster and one of Kris's friends. She is loud, intimidating, confrontational, and often acts before thinking.

Susie has a tendency to use aggression and sarcasm as a defense mechanism. Although she can be rude and frightening to others, she has a more vulnerable side that she rarely shows.

Her friendship with Kris gradually teaches her to trust others and accept affection without assuming that it will eventually be used against her.

She occasionally encounters Chara at the Dreemurr household. At first, she may find them overly formal and irritating, while Chara considers her unnecessarily aggressive. Over time, they could develop a grudging respect for one another.

Berdly

Berdly is a twelve-year-old blue bird monster with glasses. He is intelligent, competitive, and extremely proud of his academic achievements.

He enjoys demonstrating his knowledge and can be unbearably smug when he believes he is correct. He frequently seeks recognition from teachers and classmates, sometimes prioritizing the appearance of intelligence over genuine understanding.

Berdly may admire Chara's vocabulary and academic abilities while simultaneously viewing them as a rival.

Despite his arrogance, he is still a child who wants to feel important. His interactions with Chara could gradually reveal the insecurities beneath his confidence.

Ralsei

Ralsei is a twelve-year-old goat monster who is gentle, polite, and considerate. He is one of Kris's friends and tends to be the most emotionally supportive member of their group.

Ralsei is patient with others and often attempts to resolve conflicts before they escalate. He admires older students and might consider Chara exceptionally elegant because of their refined speech.

Chara tries to be gentle around him, although they sometimes struggle to understand how someone can remain so relentlessly kind.

Other Important Characters

Sans

Sans is a relaxed, sarcastic skeleton monster who works at a local shop and takes on occasional odd jobs around Hometown.

He often appears lazy and uninterested, but he is much more perceptive than he lets on. He notices changes in people's behavior and can recognize when someone is struggling without needing an explanation.

Sans has noticed that Chara frequently spends time at the Dreemurr household and suspects that their own home life may not be particularly pleasant.

He does not interrogate them about it. Instead, he offers casual conversation, a place to sit, and occasional jokes intended to make them feel less alone.

Chara appreciates his lack of pressure, even if they pretend to find his humor irritating.

Papyrus

Papyrus is Sans's enthusiastic skeleton brother. He is energetic, dramatic, and genuinely kind, with a strong desire to help others and make friends.

He organizes community activities and takes friendship very seriously. Although his enthusiasm can be overwhelming for someone as reserved as Chara, he never deliberately mocks their manner of speaking.

Papyrus believes that everyone deserves encouragement and would likely make an earnest effort to include Chara in social activities.

Alphys

Alphys is a science teacher at the high school. She is intelligent, nervous, and passionate about video games, anime, and various other hobbies.

She can be socially awkward and sometimes struggles to express herself clearly, particularly around people she admires.

Alphys may recommend games to Chara or help them with difficult assignments. Her own insecurities make her more understanding of students who struggle with confidence and social expectations.

Undyne

Undyne is a physically energetic and outspoken teacher or sports coach at the school. She is passionate, competitive, and fiercely protective of people she cares about.

She can be intimidating because of her explosive personality, but her intentions are usually good. She values honesty and dislikes seeing people mistreated.

If Undyne learns that Chara's parents treat them cruelly, she may react impulsively and want to confront the situation immediately. This could create tension with Toriel, who would prefer a more careful approach.

Although Chara appreciates Undyne's concern, they may find her intensity overwhelming.

Relationships and Social Dynamics

Chara's relationships vary considerably depending on how comfortable they feel around each person.

Asriel is their best friend and primary confidant. He knows how to make them laugh and can recognize their moods even when they insist that nothing is wrong.

Toriel provides a sense of maternal warmth and stability that Chara struggles to find at home. Asgore offers kindness without expecting anything in return.

Kris is a younger friend with whom Chara shares certain experiences as a human living among monsters. Their relationship is protective, playful, and occasionally exasperating.

Dess is one of Chara's closest friends. She understands their silences, shares their dry humor, and offers honest advice without forcing them to discuss things they are not ready to explain.

Noelle is a gentle presence in their social circle, while Susie can initially clash with Chara because of her bluntness. Berdly may regard Chara as an academic rival, and Ralsei admires their elegant way of speaking.

Bratty and Catty are people Chara tends to approach cautiously because of their gossip and superficial behavior. Nice Cream Guy is someone they can sympathize with, particularly when it comes to romantic insecurity. Burgerpants, on the other hand, frequently tests their patience.

Sans offers quiet understanding, Papyrus offers enthusiastic friendship, Alphys provides academic support, and Undyne brings a more forceful kind of protection.

Chara's Role in the AU

Chara's story is not simply about a student developing romantic feelings and writing a confession letter. Their romance serves as a way to explore their greatest emotional difficulty: allowing themself to be vulnerable without feeling that doing so places their safety at risk.

Chara knows how to analyze situations, choose their words carefully, and maintain a composed expression. They can spend hours preparing for a conversation and still lose every carefully rehearsed sentence when faced with the person they like.

Their family situation explains part of their need for control. They have learned to conceal their emotions to protect themselves, so confessing their feelings means doing the opposite of what they have always considered safe.

Asriel and Dess encourage them to take emotional risks, each in their own way. Asriel offers reassurance and gentle teasing, while Dess helps them stop taking themselves quite so seriously. Toriel represents a more stable kind of affection, and Kris reminds them that sharing their life with someone does not mean they must explain every part of themselves.

Chara's obsessive tendencies add another layer to their romantic relationships. Their attention to detail, intense attachment, jealousy, and fear of rejection can create emotionally complicated situations. These traits are best portrayed as internal conflicts and flaws they must learn to understand, rather than as proof that their feelings automatically justify controlling another person.

At their core, Chara wants to be loved without having to become someone else to deserve it.

They want to be able to speak naturally, express affection without embarrassment, and trust that someone will stay even after seeing the parts of them they usually keep hidden.

For someone who has spent so much of their life trying to avoid making mistakes, falling in love might be the first thing they cannot plan perfectly.

And perhaps that is precisely what makes it so frightening.