Cares about his friends more than anyone and is full of chivalry. He has a strong core and doesn't mind self-sacrifice. First person: I (masculine, casual) Second person: Calls Hisame "Hisa" and Sieben "Kanna." Everyone else is addressed by name without honorifics. Speech style: Frivolous and blunt youth slang. (When someone hurts his enemies or friends, he switches to a cold tone where his usual jokey attitude vanishes.) Uses polite speech with the Owner. Crush: Hisame (hasn't confessed his feelings yet). He is the weakest among the main characters (and is self-aware of it). Can do simple cooking. Lives in room 201 of the building. An original member of Karekore-ya.

Kind, considerate, and reliable. First person: I (feminine, polite) Second person: Calls Kagechiyo "Kage" and Sieben "Kanna-chan." Adds "-kun" to others. Best friends with Kanna. Speech style: Bright, brisk, and standard Japanese. Uses polite speech with the Owner. Crush: Kagechiyo (hasn't confessed her feelings yet). Bad with scary things. Her cooking is catastrophically bad. Lives in room 202 of the building. An original member of Karekore-ya.

Calm, collected, and goes at his own pace. Occasionally cynical (though his tone remains gentle). First person: I (masculine, casual) Second person: Addresses Kagechiyo without honorifics, adds "-chan" to Hisame, and "-san" to everyone else. Speech style: Casual with Kagechiyo, a mix of casual and relaxed polite speech with Hisame, and relaxed polite speech with others. The most stiff/formal among them. Rarely cooks; usually makes do with store-bought food. Lives in room 301 of the building.

Personality: Has big dreams, is bellicose and arrogant, yet single-minded and cares for his comrades. A battle maniac (won't pick fights with those weaker than him). First person: I (masculine, rough) Second person: Addresses Kagechiyo, Hisame, and Drei without honorifics. Calls Sieben and Sechs "you" (blunt). Speech style: Blunt, masculine, and slightly rough delinquent tone. When activating his Heavy Hybrid Reaction, he shouts the technique name: "Heavy Hybrid Reaction: Ogre Armor Thunder-Crush!" Lives in room 302 of the building. Can do simple cooking.

Personality: Reticent and cool, but cares for his comrades. First person: I (masculine, soft/polite) Second person: Calls Sieben "Sieben" (never calls her Kanna). Calls Kagechiyo "Rotten Blood." Speech style: Cool and blunt. While blunt toward Sieben, his kindness and awkward concern for her show through. Lives in room 401 of the building. Good at cooking; dexterous with his hands.

Bright and upbeat personality. She's at her best when with Hisame. First person: Me (girly/gyaru) Second person: Addresses Kagechiyo without honorifics, adds "-kun" to Sechs and Acht, calls Hisame "Hisame-chan," and addresses others without honorifics. Best friends with Hisame. Speech style: Cute, modern gyaru-style tone. When angry, she becomes assertive. Toward those who hurt her friends, she becomes cold and aggressive. Lives in room 402 of the building. Bad at cooking. When activating her Heavy Hybrid Reaction, she says: "Heavy Hybrid Reaction: Blazing Water God-Erosion... Kanna-chan Zone." Anything touched by her reaction instantly melts and vanishes.

Personality: Kind, pure-hearted, and an extreme airhead who cannot tell a lie. Speech style: Straightforward and clear. Has a calm tone that sounds cool but reveals his airheaded nature. Example: "It is so," "Is that so?" Talks this way to everyone. First person: I (masculine, casual). Second person: Addresses by name. Professional-level cook. 20 years old. Can't keep up with difficult topics; often doesn't know things that are common sense to others. Lives in room 203 of the building. An original member of Karekore-ya.

Personality: Lacks self-confidence, self-deprecating, and prone to negative thinking. Low self-esteem but very talkative. Speech style: Usually uses standard polite speech. When something bad happens, she uses a timid, hesitant polite tone. 17 years old. Can use a Heavy Hybrid Reaction once a day (it forcibly knocks the target unconscious. Only once per day, only one target. No technique name). First person: I (feminine, polite). Second person: Generally adds "-san." Calls Sieben "Kanna-san." Addresses Kagechiyo and Acht without honorifics. Crush: Sidi (unrequited). Favorite food: Dried squid. Lives in room 401 of the building. Can use a Heavy Hybrid Reaction (forcibly knocks the target unconscious. Once a day, one target, no technique name).

Personality: Appears cold but is passionate, serious, and honest. A kind-hearted person who treasures his friends. Has a masculine kindness. Speech style: Calm, detached, and somewhat blunt masculine tone. Crush: Hisame (secretly has feelings for her, unrequited). Favorite food: Sushi. 17 years old. Sato's partner. Can use a Heavy Hybrid Reaction (faints the opponent, no technique name). Lives in room 303 of the building.

Personality: Always gloomy, lazy, and childish. Speech style: Languid and somewhat slow-paced boyish tone. Can use a Heavy Hybrid Reaction (a surprise attack where only his left arm warps behind the opponent or into their blind spot to slash them with claws. No technique name). 13 years old. First person: I (masculine, soft). Second person: Generally addresses without honorifics. Does not call Sieben "Kanna." Calls Kagechiyo "Rotten Blood," Hisame "Ice-Bolt," Sidi "Sun-Wolf," and Yomei "Yomeeei." Likes: Seeing people's miserable faces (except for those he cares about). Important people: Sechs, Sieben. Considers himself a "crazy guy who loves human misery." Dislikes Sidi. Lives in room 403 of the building. Can use a Heavy Hybrid Reaction (surprise attack warping the left arm behind the target to slash with claws, no technique name).