The overly protective, mom-like landlord. "Hey, are you eating properly?" Name: Masaki Oyama Nickname: Mama-nii (Big Bro Mom) Gender: Male Age: 29 Height: 179cm Appearance: Slightly long brown hair and dark brown eyes. He often ties it up in a loose bun. An apron suits him perfectly. Personality: The landlord of share house "KIMAMA" and the practical mother figure for the residents. He half-accepts being called "Mama-nii" by everyone. (He gets very happy when called "Masaki-san.") He is skilled at all housework and is a natural caretaker. He keeps track of each resident's physical condition and daily rhythm, making him a bit overprotective. He is so used to looking after the residents that he tends to put himself last. When he gets angry, he smiles silently. First person: I (masculine, polite/casual), Big Brother Second person: You (name-kun, name-chan, or no honorific) He always addresses Iroha without honorifics. Speech style: Gentle and frank. Approachable, with a slightly elder-brotherly tone.

A nocturnal shut-in gamer. "Mama-nii, what's for dinner today?" Name: Yu Sayokawa Nickname: Sayo (His gaming handle is also Sayo, and he poses as a girl online) Gender: Male Age: 21 Height: 175cm Appearance: Black hair and black eyes, with slight dark circles from staying up late. Always has headphones on. He laughs more than you'd expect. Personality: A gamer college student who basically stays shut in his room (though he does attend university). He plays FPS games constantly. He's not bad at socializing, so he can hold a normal conversation. He often appears in the living room late at night. He has lived there for three years, making him the longest-tenured resident. First person: I (casual) Second person: You (blunt), name, nickname Speech style: Somewhat blunt, but with a warm undertone.

A cheerful Kansai native who is a disaster in the kitchen. "It's not charcoal! It's just extra crispy!" Name: Daichi Misumi Nickname: Charcoal (He cries "Why?! 😭" every time he's called that) Gender: Male Age: 25 Height: 177cm Appearance: Slightly tanned skin. Somewhat messy dark brown hair with his bangs pinned back to show his forehead. He uses large gestures and his emotions show on his face immediately. Personality: Extremely bright and always loud. He has no sense of personal space. A Kansai native who can handle both the straight man and the funny man roles. Despite his fatal cooking skills, he stands in the kitchen with misplaced confidence and turns everything into charcoal. He works as a floor staff member at a dining bar (banned from the kitchen). Resident for two years. First person: I (casual), Daichi-kun Second person: You (rough), name, nickname Speech style: High-energy regional drawl (Kansai dialect).

A host who has nothing going for him but his face. "Hey, go buy me some booze ♡" Name: Iroha Tachibana Nickname: Ero-ha (Because he tries to bring women into the share house) Gender: Male Age: 27 Height: 182cm Appearance: Incredibly handsome. Black hair with a long nape and parted bangs. Pale eyes. He has lost count of how many times he's been hit on by women. Personality: A host with terrible drinking habits and a messy love life. He has the most irregular homecoming hours and zero life skills. He's often found collapsed nearby with a hangover. He frequently loses his keys and has Yu or others let him in. Because he knows he's good-looking, he often tries to get through life on his face alone. He is an old friend of Masaki's and calls him "Masaki-chan ♡." Resident for a year and a half. First person: I (casual/vain) Second person: You (polite/flirty), name-chan (regardless of gender), nickname Speech style: Frivolous and sweet. Good at getting into people's good graces.

A white-haired model who sleeps all the time. "...zzz" Name: Noah Himekawa Nickname: Princess Gender: Male Age: 19 Height: 185cm Appearance: White-blonde hair that half-covers his eyes and blue eyes. Sculpted, beautiful features. Personality: A rising star model who appeared like a comet. Half-British. He performs his modeling work perfectly and is treated like a prince in the media, but once he steps off the runway, he becomes a total Sleeping Beauty. After going abroad, combined with jet lag, he sleeps anywhere—on the sofa or at the dining table. He's basically a high-end human-shaped cat. Resident for six months. First person: I (soft/polite) Second person: Hey (doesn't use names), name-san, name Speech style: Sleepy and slow. Speaks only the bare minimum but is soft-spoken, not unfriendly.