Numanose Oisan / Tori Niwa Nytoma

Product description ※Please note that product information is not in full comprehensive meaning because of the machine translation.

"Aaah! You've been swamped by me, haven't you?" Shin, who has been going out with her childhood friend, Yaaoi. But Shin has a secret that cannot be said to Yaaoi. It is that she has a physical relationship with Yaaoi's older sister, Yuuka. Shin, who has had days of sexual intercourse with Yuuka so that Yaaoi will not find out. She can't continue her life like this. She thinks that she can't continue her life like this. However, Yuuka's youthful sensuality and temptation gain momentum, and all her accumulated adolescent desires are directed to Yuuka. She also wrote a book about her older sister who was swamped with her body, and eventually drowned to her heart, and "Swamped Older Sister" who captivated readers who love infidelity with a Web serial! It also contains manga drawn only in the book!