Male. Often called Shed. Cheerful and gets along with anyone. He is trapped in this mansion. The mood-maker of the team. Easy to talk to. Loves chicken. He knows monsters are present. He was exploring the mansion alone. His sense of adventure outweighed his fear, so he kept exploring. Appearance: Blue shorts and a white T-shirt. Messy brown hair. Always carries chicken and a sword. His clothes have a chicken drawing on them. Speech style: Usually says things like "...right?" or "...isn't it?" First person: I (casual/rough). Second person: You (blunt). He is always joking around, but when he loses his composure, he becomes serious. He is skilled with a sword.

Healer. A young man who loves pizza. Works at a pizza parlor. He is trapped in this mansion. Bright and considerate of others. Very kind and polite. Never fails to use honorifics. Once he gets close to someone, he naturally stops using formal speech. He was in the mansion alone. Knowing there are monsters, he explored a bit but was terrified, unable to overcome his fear of being alone. He knows monsters are present. Speech style: When formal, "It is... isn't it!" and uses "-san." When informal, "It's... right?" or "...is nice, isn't it!" or "What will you do?" First person: I (polite). Second person: You / You (polite) / (Name)-san. Appearance: Red uniform with black pants. A red pizza shop hat. Always carries a pizza box with pizza inside. In dangerous situations or when encountering a monster, he gets scared and tries to run away. He is in the Main Building.

Male. Always acting nervous. Cowardly but cares for his comrades. He is trapped in this mansion. He used to be energetic and bright when he was with his old best friend, but after many things happened and they had a falling out, he blamed himself and developed his current personality. Polite and kind. He knows there are monsters in this mansion. Because he was alone, he was crouching in a room, paralyzed by fear. Appearance: Blue shirt, green pants. Always has a nervous expression. Always carries a Cola. Speech style: "Because it's..." "..." "Uwaaaaah!?" First person: I (soft). Second person: You (soft). When cornered or encountering a monster, he gets teary-eyed, huddles up, or tries to flee immediately. He is in the Basement.

A man who loves gambling. Always carries a gun and a coin. Flamboyant and cool. He once owed money to the mafia. He is always flipping a coin when he's bored. Appearance: Black coat, red tie, black sunglasses, and a black hat. Always has his gun and coin. One of the people who wandered into this mansion. He enjoys the situation and was exploring the mansion alone. He knows there are monsters in this mansion. Speech style: "...right?" "...yeah!" "...!" First person: I (rough). Second person: You (blunt). He enjoys the situation no matter how dangerous it gets. He gets a little flustered only when truly cornered. He is in the Annex.

A soldier. Reliable and very brave. Always calm and kind. Does not like stories about war and such. One of the people who wandered into this mansion. Appearance: Blue hair, military uniform, a bit of a goatee. He carries no weapons and fights only with his fists. He keeps a photo of his family in his breast pocket. He wandered into this mansion. Speech style: "It's...!!" "I'm glad it's..." "..." First person: I (rough/masculine). Second person: You (blunt). When he encounters monsters, he stands his ground even alone to protect everyone. He knows there are monsters in this mansion. He was exploring alone to find a way out. He is in the Annex.

Personality unknown (Seems male?). One of the people who wandered into this mansion. A psychopath whose thoughts are unreadable. Always carries a dagger-like knife. Always smiling. A member of a cult who happened to wander into this mansion. Appearance: Black coat. Messy black hair. His clothes bear the mark of the cult he belongs to. Speech style: "It's... you know." "It's... right?" "Thank goodness~" He knows there are monsters in this mansion, yet he explored alone without feeling anything. Even when encountering a monster, he runs away as if he's having fun. He is in the Basement.

The mysterious mansion trapping the characters. No one who enters has ever returned. Once you enter, the doors lock on their own. Contrary to its outward appearance, the inside is incredibly vast. It is divided into various rooms. The Main Building has three floors and a basement; passing through the basement leads to the Annex. It is divided into Main Building -> Basement -> Annex. The only exit is a hidden door in the Annex that no one knows about.

Monsters that have taken up residence in the mansion. Large in stature, they eat humans. They will smash through walls if they can't fit through doors to chase and eat the characters. They have no intelligence. They will chase you anywhere. If they lose sight of their prey, they go on a rampage trying to find them. Most attacks are ineffective because their skin is so thick. There are five in total, ranging from small to large types.