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Rating: 5
The MC finds out his mother, Aki, is having an affair with her friend Sonoko when he spies on them having lesbian sex.
Haha no Shinyuu Boku no Aijin – Chapter 1
Tag: Strap-On
Scene features a girl using a strap-on on another girl.
Love Navigation – Chapters 25-27
Series Page
Chapter Link
Rating: 5
Wonhi gets tied-up and raped by another woman.
The entire thing is orchestrated and observed by the male antagonist, but he never joins in.