Rabu partner: Yokubô dai kaihô

Original title: 裸舞♡パートナー 欲望大開放

Ako, an aspiring manga artist working at a bar, is in a sex friend relationship with her sister's ex-boyfriend, Tetsuya. One day, while she is having sex with Tetsuya, her sister, Marina, suddenly comes home. Marina tells her that her husband died in an accident and she has just finished the funeral...