Kankin

One night, while returning home, a handsome businessman asked Anna for directions, and then the office-lady suddenly fainted and her memory went blank after that. When she woke up, she found herself on a bed in the middle of an empty room, strapped into restraints...? What happens when a person in an extreme state of mind, directs all of his mad, distorted love at your heart and soul...?

(Source: Maho Comics, translated)