ADN-406 Forgive me... I was raped by my sister's boyfriend Sakuraimami

Relying on her older sister, Maya, who is married and lives in Tokyo, Rina moves to Tokyo and lives at her sister's couple's house. She ignores her sisters who talk about her recent boyfriend, and her husband who can't help but worry about the responsibility of taking care of her daughter when she is her age. Despite such worries, Saeki, who dutifully visits Rina on her way home from a date, is a friendly man... However, although this man is serious on the surface, he really likes women. He lusts for Maya without restraint...