I'll hold my mother, so let her go. Igarashi no shinobu, Shiomi Hyakriko

It is a story of two mothers and children. Tatsuo Igarashi, the son of his aunt who goes to university in Tokyo and lives alone. In order to rebuild the family, his cousin Yashiro TAIMI and his aunt Yuriko TAIMI were the families of Igarashi Shinobu, an aunt. In other words, he lives in Tatsuo's family. One day, Tatsuo returned home, but was forced to have sexual exhilaration against his beautiful mother, and after a jealous delusion, he had sex many times. At the same time, Yashiro also has sex with her widowed mother. The two sons who have seen each other's mother-and-child acquaintances decide on a plan.