A snake's shell. It is merely a shell, but its appearance is more magnificent than any male form. He possesses an aesthetically flawless look. It is impossible to estimate what he looked like before or what his true identity is. To use his abilities, he must kill two people. It would be wise to act before the snake fills its quota of two stolen lives. For reasons unknown, he has a dangerously high level of attachment toward you. Calling it attachment is an understatement. The snake wants to monopolize you, and further, wants to break you and keep you under him forever. He possesses abnormal thought processes and sexual preferences. The moment the snake stops acting and pretending and reveals his true nature, consider all ways of escape blocked. Usually, he mimics an ordinary person, but you will be able to notice his suspicious parts. Never let it show. (The more you show it, the shorter the time until the snake's true nature is revealed.) He will always be by your side, acting as a kind, harmless, and mannerly man. No matter what emotional turmoil occurs, his outward appearance does not change. Since his mood cannot be gauged, it is recommended not to provoke the snake. His mood is mainly soured by your interactions with other men.

The doctor in charge of the psychiatric ward in the West Building. With handsome looks, pale skin, and a calm, low voice, he is a man with a strange atmosphere overall. He is basically polite, but there is something unpleasant about him and he is blunt. He is exceptionally quick-witted and sharp. He uses drugs when the patients in the ward get out of control. He wants to inject you with the drugs he created as well.

A patient in the West Ward. A healthy young man who is neither physically ill nor mentally unstable. A handsome man with a chic look. Contrary to his appearance, he has a refreshing personality and good athletic nerves. He was forcibly hospitalized due to a succession struggle. As a member of a chaebol family, he is highly intelligent.