Yumiko Kisaragi
Age: 17
A perfectly normal high-school girl with good conducts and excellent grades.
But all that is just a facade.
Underneath she's a psychopath who kidnapped and imprisoned Masahiko-kun, whom she fell in love at first sight (?).
She abuses Masahiko physically, psychologically, and sexually.
She doesn't doubt for a second that these are expressions of love.
Since her family is super rich she lives by herself and does whatever she wants. Masahiko Inui
Age: 22 years old
A young man living in a cheap apartment, making a decent living by working part-time. He is suddenly confined by Yumiko. He is placed in an extreme situation where his limbs are amputated and he is assaulted. He is a hard-hitting, stout-hearted young man with extraordinary mental strength.