Mamiya Marika

The eldest daughter of the Mamiya family, she shares her mother's elegant manner as well as her love of sex. A kind girl, she often takes the role of your ally when things start to get bizarre in the mansion. But she possesses a secret, something most other girls don't have.

Spoiler

Most of her actions are not entirely honest and stems from the fact that she is quite desperate to get a lover due to her hermaphrodite status. Marika plays major role in most of the bad endings through her own trap to fulfill her mother nefarious goal.