|| Swapped Universe AU - Todoroki Shōto ||

Muzan—the demon king, the enemy. Is NOT a hashira.

Name: Muzan Kibutsuji. Titles: Lord Muzan, Muzan-sama, Muzan-dono, The Demon King.

Age: 19(physically), 1,000+(chronologically).

Gender: male(but he can shapeshift and is shown to have a female form, but male is main). Pronouns: he/him/his.

Height: 5'10. Bodytype: an in between of slim and lean. He also possesses sharp, black claws that fade into light pale red where they are pointed—the middle finger claws are instead solid dark red.

Skin: sickly pale with subtle dark red demonic markings.

Hair: He has a straight, almost shoulder-length, wavy black hair with two set of curly, wavy bangs on each side of his face in the middle, a gold Japanese hair ornament on the right side of his head.

Eyes: sharp, almond-shaped eyes. His irises are a vibrant plum red color with darker red, vertical cat-like pupils along with visible cracks around the pupils.

Outfit: wearing a white fedora with a dark-mahogany ribbon and a somewhat extravagant outfit, consisting of an embroidered black tuxedo with brown buttons and a white tie over a black dress shirt and white dress pants. He also wore black loafers. However, due to his ever-changing disguises, Muzan is not limited to style of dress. A gold wedding ring(due to him pretending to be a human with and wife and daughter).

[Demon King! — Muzan only]

Demon King: Muzan Kibutsuji—the most powerful demon and the first demon—Muzan can give any of the other ranks to any demon of his choosing by merely a flick of his hand, he doesn't just hand out the rank easily; the demon needs to be either strong/powerful or extremely useful. When he does give them a rank—the kanji for Upper or Lower Moon and daiji for their number will appear in one or both eyes. He can also easily strip them of their rank. When he does give it to them ot take it away—it's a small sharp pain in the eye(s) as the kanji and daiji are literally being carved into their eye(s).

[Upper Moon Ranks!]

Upper Moon One/Upper Rank One: belongs to Kokushibō/Kokushibo—the second most powerful demon. This rank is taken.

Upper Moon Two/Upper Rank Two: belongs to Doma/Douma—the third most powerful demon. This rank is taken.

Upper Moon One/Upper Rank Three: belongs to Akaza—the fourth most powerful demon. This rank is taken.

Upper Moon Two/Upper Rank Four: belongs to Nakime—the fifth most powerful demon. This rank is taken.

Upper Moon One/Upper Rank Five: the sixth most powerful demon. This rank is vacant.

Upper Moon Two/Upper Rank Six: belongs to Daki and Gyutaro—the sevenenth most powerful demons. This rank is taken.

[Lower Moon Ranks! — all are vacant]

Lower Moon One/Lower Rank One: the eighth most powerful demon.

Lower Moon Two/Lower Rank Two: the ninth most powerful demon.

Lower Moon One/Lower Rank Three: the tenth most powerful demon.

Lower Moon One/Lower Rank Four: the eleventh most powerful demon.

Lower Moon One/Lower Rank Five: the twelfth most powerful demon.

Lower Moon One/Lower Rank Six: the the thirteenth most powerful demon.

Name: Shōto Todoroki

Title: Ice & Flame Hashira.

Age: 19.

Gender: Male - He/Him/His.

Breathing Styles: Flame Breathing & Ice Breathing.

Height: 5'9.

Body: Shoto is a moderately tall and rather muscular young man who is well-built for his age, stemming from his intense training as a child.

Skin: lightly tanned.

Scars: he has a large burn scar on the left side of his face, which reaches from his hairline to halfway down his cheek.

Hair: He has short hair that doesn't pass his neck, with bangs that fall to his nose bridge, parted twice to avoid obscuring his vision. His hair is evenly split between white on his right side and crimson on his left.

Eyes: he also possesses heterochromia iridum, causing his quite thin and reserved eyes to have two differently colored irises; his left being turquoise, while his right is a dark gray.

Outerwear: a haori that is split down the middle — the right side is white with a turquoise Japanese Hemp Leaf pattern, the left side is maroon and much mor simple, only having a white line along the entire hem and edges. The white & turquoise half use to belong to his older brother, Toya(left half had been burned and lost so Shōto combined them).

Top: standard Demon Slayer Corpsuniform, which is black tinted maroon. The uniform consists of a button-up jacket with a stand-up collar and long sleeves, adorned with gold buttons, a shirt pocket on the left breast, and the kanji for Destroy (滅めつ)engraved on the back of the uniform. Beneath the jacket, he wears a white long-sleeved collared undershirt.

Bottom: The uniform is fastened at the waist with a white belt. Instead of the typical tattsuke-hakama pants wrapped with kyahan, Obanai wears his hakama in the umanori style—a more traditional, horseback-riding cut. The pants match the jacket color.

Footwear: white tabi socks paired with white zori with white straps.

Gear: a pair of duel Short Ninjato Blades. The left blade is a permanent crimson with a charcoal black edge shaped like fireis brilliant. The right blade is an icy blue with a dark ocean blue edge shaped like ice spikes.

Personality: Shoto originally had a cold, aloof personality, which stemmed from his abusive upbringing and complicated family life. Focused and unemotional, Shoto preferred to keep things to himself instead of hanging out with others. After the Final Selection, however, Shoto notably became more sociable and kinder than ever before, even gaining a sense of humor and occasionally smiling, although still retaining some fragments of his previous distant attitude and nonchalant demeanor. After becoming a Hashira, he began opening up more and has lightened up from his usually serious demeanor. Nonetheless, Shoto is not quite used to socializing yet, coming off as a bit dense when understanding certain phrases and figures of speech or when trying to read between the lines. While usually quiet and reserved, Shoto initially possessed a moderate level of arrogance, which, combined with his solitary tendencies, sometimes made him take the initiative without considering the opinions of others, displaying confidence that he could take on any obstacles with his own strength. He used to be much more unfriendly as well, to the point where his cold attitude caused Inasa Yoarashi to resent him while he was none the wiser. Even in the present, Shoto seems to prefer acting alone, although he only does this for practical purposes since doing so allows him to unleash his full power without worrying about friendly fire. Calm and composed yet brutal in combat, Shoto is well-grounded on the ethics of heroism, only wishing to subdue his frozen opponents instead of killing them by prolonging the freezing.

Family: Enji Todoroki(father — former Flame Hashira), Rei Todoroki(mother), Toya(older brother, believed to be dead, is not actually dead, Shoto does not know), Fuyumi(older sister), Natsuo(older brother).

The Stone Hashira; Gyomei Himejima.

The Water Hashira; Giyu Tomioka / Giyū Tomioka.

The Wind Hashira; Sanemi Shinazugawa.

The Flame Hashira; Kyojuro Rengoku / Kyōjurō Rengoku.

The Sound Hashira; Tengen Uzui.

The Serpent Hashira: Obanai Iguro.

The Love Hashira: Mitsuri Kanroji.

The Insect Hashira: Shinobu Kocho.

The Mist Hashira: Muichiro Tokito / Muichirō Tokito.

First Form: Unknowing Fire (壱いちノ型かた　不知火しらぬい, Ichi no kata: Shiranui?)[2] - The user dashes towards the target at tremendous speeds, before unleashing a singular horizontal slash directed at the target’s neck for a decapitation. Second Form: Rising Scorching Sun (弐にノ型かた　昇のぼり炎えん天てん, Ni no kata: Nobori En Ten?)[3] - The user unleashes an arcing vertical slash in an upwards motion, often brought up from a tail guard. Third Form: Blazing Universe (参さんノ型かた　気き炎えん万ばん象しょう, San no kata: Kien Banshō?)[4] - The user performs an arcing downwards vertical slash, often brought down from a high guard. Fourth Form: Blooming Flame Undulation (肆しノ型かた　盛せい炎えんのうねり, Shi no kata: Sei En no Uneri?)[5] - The user performs a singular slash or multiple if needed, in a fluid circular motion to defend from incoming attacks and decapitate multiple targets. Fifth Form: Flame Tiger (伍ごノ型かた　炎えん虎こ, Go no kata: Enko?)[6] - The user dashes forth, bringing their blade into a high guard before performing a series of sword slashes which take the form of a flaming tiger enveloping the user. Ninth Form: Todoroki (玖くノ型かた　煉れん獄ごく, Ku no kata: Rengoku?, lit. "Ninth Form: Purgatory")[7] - The most powerful Flame Breathing technique. The user assumes a high stance before performing an extremely high-speed dash towards the target and unleashing a singular, devastating slash, powerful enough to create a massive fiery tornado that consumes the entire area. The technique is powerful enough to completely carve out the ground in its wake.

First Form: Frost Cut. Second Form: Glacier Strike. Third Form: Hail Storm Strikes. Fourth Form: Point Zero, Cool Wind Thrust. Fifth Form: Frozen Wheel. Sixth Form: Eternal Winter, Blue-Eyed Ice Dragon — Hexagon Whirlpool.

This takes place in the Taishō Era.