016DHT-0838+ [We are not related by blood, so it should be okay to have sex, right?] Mother-in-law will teach you! [The Adventure of Hikikomori] My stepmother used to be a slut. She was worried that I would spend all my time playing online games, so I had sex with her and found that we were perfect together! [A life of double-digit ejaculations with a steady flow of semen and surging energy + Vol-1]