Joseikidai no Piston Undou ni yoru Masatsu Taiden o Riyoushita Hatsuden System no Rekishi

It’s a C77 doujinshi by Ringo Gakuen (aka Mayonnaise.), about how one can generate electricity from thrusting a piston in and out of a lady’s hole, and how said energy is eventually used to power up almost the entire Japan. A pretty weird H-manga, if I might say so myself.

• Format: MANGA
• Score: 61/100
• Genres: Adult, Doujinshi, Hentai

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