SPRD-1504 The sex friend at that time was... a friend's mother, Honma Yuri

Honestly, I only realized how intense the sexual desires of women in this age group are... and that aunt had a masochistic streak, obeying everything I said... Our relationship continued even after I moved on to higher education... When her husband wasn't home, we'd basically have sex non-stop at friends' houses. Lately, we'd just go out normally to my place or love hotels to have sex like crazy... It was like a typical boyfriend-girlfriend relationship... Honestly, it got tiring... And then... an incident happened...