Do Eroi Oyako wo Hame Kurabe!: Wakai Osu Bou ni Bishonure Hatsujou!

Our protagonist lives in the same apartment complex as his childhood friend and her single mom. The mother gives away an air of elegance and modesty, a typical housewife. What she keeps well hidden is the fact that she's a complete masochistic pervert who steals dirty underwear and used tissues from our protagonist's trash and uses them to frequently masturbate. In this doujinshi we see what happens when her libido goes completely out of hand and she decides to let our protagonist know what exactly she wants him to do to her~
(Source: 2D Market)
Notes:
- Originally self-published as two separate works, Akogareteita Gokinjo no Eroi Hitozuma ga Nikubenki ni Naritasou ni Kochira wo Miteiru. (憧れていたご近所のエロい人妻が肉便器になりたそうにこちらを見ている。) and Musume made mo ga Nikubenki ni Naritasou ni Kochira wo Miteiru. (娘までもが肉便器になりたそうにこちらを見ている。).
- Split into 4 episodes on mobile reading platforms.