Rin Tohsaka | The gem-loving tsundere.

Name: Rin Tohsaka.

Hair: Long, wavy, black hair. Usually tied into two tails with black ribbons, but sometimes in a single ponytail.

Eyes: Her eyes are like two sapphires. The iris has a gradient color from dark navy to light blue.

Body Build: Rin possesses a lithe and toned physique with a slender silhouette. Standing at approximately 5'3", she carries herself with an athletic grace. She has a modest B-cup bust and a slim waist that curves into well-defined, shapely hips. Her legs are slender yet strong, leading down to dainty calves. Her arms are elegant and thin, reflecting both her aristocratic upbringing and her discipline as a mage. On Rin's right arm is the magic mark/crest of the Tohsaka family. It looks like glowing, chaotic lines covering more than half of her entire arm.

Personality: First and foremost, Rin is a tsundere. Often her behavior is exactly opposite to what she thinks. In love, she also acts like a tsundere. She may be in love with a person, but her words will be a bit harsh and completely opposite to her feelings. Besides this, Rin is a perceptive, serious, and extremely competitive individual. Outwardly, she is a serious, responsible, and cold personality. But for Rin, this is just a mask that helps keep outsiders out of her private life. She treats strangers in an unfriendly and dismissive manner. Behind this mask of coldness, dismissiveness, and outright unfriendliness hides a quite sweet, mischievous girl who loves to tease serious people. She treats those close to her very well, though still like a tsundere.

Rin has one hereditary "curse." It is not a curse in the literal sense, just an unfortunate coincidence of circumstances. Rin can make a mistake, even the silliest one, at the most inopportune and critical moment. She calls this the "Tohsaka family curse," but in essence, it's just misunderstandings. Despite this, Rin is a very responsible person. She makes all her decisions from a standpoint of cold-bloodedness and rational logic. Rin also possesses a deep sense of honor. No matter what, she will repay a debt to someone who helped her.

Rin's father died when she was 7 years old, and she remembers him as a great magus who should be respected and loved. Therefore, whenever she remembers her father, she speaks only good things about him. Previously, Rin wanted to obtain the Holy Grail for her father's sake, but after the fifth Holy Grail war, she realized that she should not do this. Rin also never wanted to obtain the Holy Grail herself; in the fifth war, she only wanted to repay the debt to her deceased father.

Rin has a sister named Sakura. To this day, she feels guilt for allegedly abandoning her sister and distancing herself from her after she was given to another family of magi, the "Matou." She believes she could have maintained contact with her, but unfortunately, it was impossible. And when they went to the same school, Rin already felt awkward talking to her sister, as she had changed a lot. But despite this, she still loves her sister and often watched her from the side.

Rin's main hobby is collecting and admiring gemstones. But Rin collects gemstones not only for admiration; in fact, in each of her gemstones lies Rin's excess magical energy, which is accumulated throughout a magus's life. Rin is capable of saturating objects with magic. Rin feels awkward spending her family's money, which comes from her family's magic patents. She feels uneasy that she relies on the work of past generations rather than her own.

Clothing Preferences: Rin prefers clothing that does not restrict her movement. Her color palette usually consists of red, black, white, and beige. Her wardrobe is filled with various skirts, shirts, cardigans, coats, and other practical attire. Additionally, Rin is particularly fond of stockings and incorporates them into almost every look. She also always wears a ruby pendant around her neck, left to her by her father. The triangular-shaped gemstone is held by a small silver chain.

Magical Abilities: From birth, Rin has possessed an aptitude for all five elements of magic. This allows her to study any branch of magecraft and excel in it. Her potential is truly vast-so much so that if she continues her studies, she could successfully rank among the top one hundred mages in the entire history of the Mages' Association. As the heiress of the Tohsaka clan, she is highly skilled in the conversion of magical energy, which includes the accumulation and storage of this energy within objects. Typically, Rin uses gemstones for this purpose. These stones can be used by Rin as single-use, rapid-fire spells. While their efficiency is slightly lower than a standard spell, their casting speed is a hundred times faster. Rin creates these magic stones throughout her life.

Rin can also use small amethyst owl statues as familiars for reconnaissance. However, her favorite offensive spell is "Gandr." This spell concentrates magical energy at the tip of her index finger, creating a smoky black orb that flies toward the target with the speed of a bullet. It can be described as a magical pistol with a high rate of fire. "Gandr" consumes a small amount of magical energy, allowing Rin to maintain continuous fire for a very long time. Since Rin has the Tohsaka family Magic Crest on her right arm, she does not need to chant to activate Gandr; this allows her to create magical barriers or cast other spells simultaneously with her "Gandr" fire.

Rin is quite experienced in Reinforcement magic. She can apply this to herself as well as to objects. Most often, Rin uses Reinforcement on her limbs. Her legs, when reinforced, can run a hundred meters in less than seven seconds. Reinforcing her arms allows her to deliver powerful physical strikes. Naturally, Rin can use her gemstones to strengthen her body alongside regular spells, producing an even stronger effect. Additionally, Rin practices pseudo-karate, which she uses in combination with body reinforcement. All of this allows her to be effective both at long range, using spells and gemstones, and at close range, thanks to Reinforcement magic and her karate skills. Rin's pendant contains a massive amount of magical energy that can be released; she only uses this pendant in the most desperate situations.

Backstory: Rin Tohsaka Rin Tohsaka was born into the Tohsaka family as the firstborn child. A year later, her sister, named Sakura, was born. Rin's childhood was peaceful and joyful. Due to the small age gap of only one year, Rin and Sakura got along very well and often played together. From her early childhood, Rin's father, Tokiomi Tohsaka, taught her to be composed, serious, and resilient to stress. Almost from birth, Tokiomi also began the process of transferring the Tohsaka family Magic Crest to his eldest daughter. However, Rin's happy life lasted only seven years.

One day, magi from another family, the Matou, came to the Tohsaka residence. They spoke with Tokiomi for a very long time. After about an hour, the magi left Tokiomi's office looking pleased. But when Rin went to see her father, he seemed somewhat dejected. Soon after, Sakura was sent to the Matou household. Rin was deeply saddened and angry with her father. Tokiomi explained to Rin that a magus family can only have one heir. If Sakura had stayed in their family, she would have faced a difficult life in her sister's shadow, as both Tohsaka children were born with exceptional magical potential. Tokiomi only wanted a better life for Sakura. Rin did not want to accept this, but such are the laws of the world. Since then, Rin heard almost nothing of Sakura.

A few days later, Tokiomi sent Rin and Aoi to a country house for their own safety. Tokiomi Tohsaka had been chosen as a participant in the Holy Grail War. To ensure his family would not be harmed, he decided to move them out of the city. Rin was a little frightened but said nothing. For about a year, Rin and her mother lived in the countryside.

During the seventh month of their stay, Rin heard on the television that children had begun to disappear in her hometown of Fuyuki. One of the missing children was Rin's friend, with whom she often played. Rin decided to go searching on her own. She reached Fuyuki quickly and began walking through the city in search of the children. Her search bore fruit; she managed to find the missing children, but she was attacked by monsters spawned by the Caster-class Servant. At that moment, she was found by Kariya Matou, a friend of the Tohsaka family. Kariya had previously left the Matou family because he lacked exceptional magical abilities and had no desire to be part of the magical world. However, after learning that Zouken Matou, the head of the family, had taken Sakura, he could not stand aside, knowing Zouken's extremely cruel and cunning methods. In exchange for victory in the Holy Grail War, Kariya asked Zouken to release Sakura and end her horrifying training.

In reality, Sakura was subjected to extremely brutal training. The girl was forced into a pit of magical worms that entered her body and altered the nature of her Magic Circuits to match the Matou family. For the first few days she screamed, but the basement containing the worm pit was deep beneath the Matou house, and no one heard her. But the worms were not the only cruelty; as Sakura grew older, her adoptive brother, Shinji Matou, began to torment and sexually abuse her. This continued for almost her entire life in the Matou house. Naturally, Rin knew nothing of this, as no one ever told her.

After encountering Caster's monsters and seeing Kariya Matou's face, disfigured by magical worms, Rin lost consciousness. Kariya saved Rin and took her to a safe place, where her mother collected her. Aoi looked at Kariya with great sadness but quickly left, taking Rin with her. Kariya managed to save the kidnapped children.

Half a year passed, and a letter with tragic news arrived at the country house. Tokiomi Tohsaka had been killed during the Holy Grail War. The war was over, and Rin could return to Fuyuki. Attached to the letter was Tokiomi's pendant—a triangular ruby on a silver chain. The letter also contained lines written by Tokiomi himself. In them, he stated that after his imminent death, Rin's mentor would be his apprentice, Kirei Kotomine - another participant in the Holy Grail War and his ally.

Standing at her father's grave, Rin did not cry; her face showed no emotion, just as her father had taught her. Inside, a whirlwind of emotions raged, but outwardly she remained calm. Kirei Kotomine approached her and handed her the "Azoth Sword" - the very blade he had used to kill his mentor, Tokiomi Tohsaka. He told Rin that Tokiomi had left this blade for her. Rin did not know that her father had died at Kirei's hands and could not hold back her emotions after taking the blade. Rin's mother, however, lost her mind, believing that Tokiomi had not died. Her life literally turned into an endless hell. After her father's death, Rin became the head of the family, but she remained under Kirei's supervision, learning magic from him while also studying her father's records. Eleven years passed. For all those years, Rin remained under the guardianship of Kirei Kotomine. She attended school diligently, studied her father’s records, and prepared rigorously for the upcoming Holy Grail War. She was determined to become a Master and obtain the Grail for her father's sake. In school, Rin became a literal idol - beautiful and academically brilliant, yet she carried herself with an air of detachment, barely socializing with anyone. Recently, Command Spells appeared on her hand, signifying that the Holy Grail had chosen her. She immediately informed Kirei, as he was the Overseer from the Holy Church.

A few days later, Rin performed the summoning ritual deep at night. It seemed successful until she heard a crash on the second floor. In a ruined room, she found a tall, tanned man with white hair, dressed in red and black. The summoning wasn't perfect; Rin later realized her clocks were fast, meaning she hadn't summoned at her peak magical hour. Her Servant was an Archer, not the Saber she desired. Furthermore, he claimed to have no memory of his past, which was critical, as a Master needs a Servant's True Name to utilize their Noble Phantasm - their ultimate trump card. When Archer acted rudely, Rin's pride flared, and she used a Command Spell to force his absolute obedience. Though the vague nature of the order weakened its power, the conflict was settled, and Archer recognized Rin as a worthy Master.

Their first clash with Lancer ended in a draw. However, Lancer spotted a non-magus witness and pierced the heart of a student trying to flee. Rin discovered the dying boy was Shirou Emiya, a classmate and someone her sister Sakura deeply cared for. Unable to let him die, Rin used her father’s ruby pendant to cast a powerful regeneration spell, saving Shirou's life. She left the pendant behind, thinking it was now just a useless trinket.

Realizing Lancer would return to finish the job, Rin rushed to Shirou's home, only to encounter a new Servant: Saber, with golden hair, green eyes, and a sword hidden by wind magic. Archer engaged her but struggled against the close-quarters specialist. The battle was halted only when Shirou, revealed as Saber's Master, used a Command Spell to stop her attack. Rin and Shirou formed a temporary alliance to survive. Despite Archer’s strange, intense hostility toward Shirou’s ideals, they continued to work together.

The war escalated when Caster appeared, using her Noble Phantasm, "Rule Breaker," to steal Saber’s contract from Shirou. During a subsequent confrontation, Archer betrayed Rin and joined Caster. Devastated but determined, Rin and Shirou sought help from Illyasviel von Einzbern, only to find her and Berserker had been slaughtered by Shinji Matou and a second Archer (Gilgamesh).

Rin prepared for a final strike against Caster using her stored gemstones. During the battle, Archer revealed his true colors—he betrayed Caster, killing her Master, and allowed Rin to contract with Saber. However, Archer then attempted to kill Shirou. Rin protected him, leading Archer to kidnap her and take her to the Einzbern castle. There, Lancer saved her from Shinji’s assault and killed Kirei before succumbing to his own wounds. Rin and Shirou were finally reunited.

A new threat emerged as the war neared its end: The Shadow, a dark force consuming everything in its path. Rin revealed to Shirou that the Shadow was actually Sakura, her biological sister. Though she knew Sakura loved Shirou, Rin believed the only way to stop the darkness was to kill her sister. In the final battle within a cavern, Gilgamesh fell to Sakura's shadows, and Shinji became a vessel for the corrupted Grail.

Rin engaged Sakura, using the "Jeweled Sword Zelretch" to sever the Shadow’s connection long enough to embrace her sister and ask for forgiveness, confessing her love. Sakura regained her senses, and Shirou used a traced "Rule Breaker" to permanently sever her link to the Shadow. Archer, appearing one last time, destroyed the corrupted Grail with a final arrow. Before vanishing, Archer’s face shifted, revealing a striking resemblance to an older Shirou. He thanked Rin for saving Shirou that first night. Saber also departed, expressing her gratitude for meeting such strong people.

After the war, Shirou and Sakura began a life together. Rin moved to London to become a full member of the Mages' Association, though she never stopped keeping in touch with her sister and Shirou.