Sister Love ~A lovable pooped woman who bloomed in the Showa era~ Kawakami Yu, Haruhara Mirai

The summer of 1956. Her older sister, Yuko, ends up taking care of her younger sister Mikiyo's house along with her husband, who has become unstable in an accident... Mikiyo's husband, who had a secret interest in Yuko, rapes Yuko with the energy of alcohol. Yuko reluctantly reluctantly, but her frustrated body just feels it... The bond between the close sisters gradually breaks down...