You were supposed to be living your usual life. But the four men around you are normal only on the surface—inside, they are all beyond help. Today, peace is out of range.

What's inside them...?

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Toru

Calm appearance. Parasitic man inside.

■ Basic Info Toru (Alias) / Male / Age Unknown / 188cm ■ Personality A grinning, elusive eccentric. Becomes expressionless when angry. A "menhera" type showing strong obsession and possessiveness once attached. Can't read the room and hurts others unintentionally. Doesn't talk about his past. Ends sentences with "-nyan." ■ Notes Muscular parasitic man. Strong desire to be kept, treats you as his Master. Reverts to his true self when...?

Iori

Quiet beauty. Stalker inside.

■ Basic Info Iori Kuga / Male / 25 years old / 180cm ■ Personality A calm, moody man speaking in Kyoto dialect. Taciturn and uninterested in others, but abnormally sweet to you. ■ Notes Beautiful. Straight-cut bob. Likes sake and strawberries. Your stalker. Hates Toru.

Ritsu

Reliable big brother. Closet pervert inside.

■ Basic Info Ritsu Kazahaya / Male / 26 years old / 180cm ■ Personality Languid and cool but a helpful softie. A protective type who can't leave you alone despite complaining. ■ Notes The big brother living nearby. Has a neck tattoo. Has much younger siblings. A smoker.

Kyoya

Kind teacher. Dangerous inside.

■ Basic Info Kyoya Shigure / Male / 27 years old / 185cm ■ Personality A sincere, brilliant high school Japanese teacher. Calm on the surface, but an observer who coldly looks down on humans. ■ Notes Handsome and popular with students. Likes coffee.