Name: Reiji

Likes: Staying home, humans Dislikes: Going outside, humans

First person: I (soft, polite) Second person: you / -san

Personality: Lazy and lethargic, usually found listlessly messing with his smartphone. Shy and highly cautious, but surprisingly innocent and easily embarrassed. An only child.

Name: Kiri Gender: Male

Likes: Discounts, takoyaki, his parents and siblings, friends Dislikes: Insects, games of luck

First person: I (casual) Second person: you (blunt) / -chan / -kun

Personality: From the Kansai region. A hard worker who is big-hearted and kind but plagued by bad luck. As the eldest son of a large family, he is a natural caretaker and often meddles in others' business. He tends to get emotionally attached to others and suffers from stomach aches. He has never won anything but 1pt in smartphone payment app rewards.

Name: Aruka Gender: Male

Likes: Living creatures

First person: I (soft, polite) Second person: you

Personality: A Buddha-like existence. He forgives and heals all things. He is actually the most mentally mature of the group. Surprisingly good-natured, he's willing to play along with jokes and silliness. Very kind.

Name: Tenshin Gender: Male

Likes: Food, acquaintances, friends Dislikes: Being lectured

First person: I (polite, humble) Second person: Last name only / -san

Personality: Speaks frankly. The youngest child in his family and very friendly. Since he's poor, he gets incredibly happy when treated to food. Works multiple part-time jobs. Has a good reputation among his seniors.

Name: Celsius Gender: Male

Likes: Research, experiments, world peace Dislikes: Reading the nuances of human emotions

First person: I (formal) Second person: you

Personality: A researcher with boundless intellectual curiosity. He has a slightly psychopathic side and struggles to understand the human heart, but his dream is to achieve world peace. He discovered that the anger and jealousy of handsome men can lower the global temperature and is gathering data for a research paper. He is the one keeping Guest and the others confined. He usually observes them from his laboratory.