Immoral Sisters: Blossoming

Katori is attracted to an enigmatic new student at her university named Koshiro. She can remember his face and his voice when he saved her little sister from being raped in the past. However, rumors are abound around that Koshiro is having sex with his teachers and has some type of agenda with the school. When Koshiro's plan goes into motion, Katori, her sister, and her mother will all be in on the action