Serious Sister Sex Sketchbook
English title: Serious Sister Sex Sketchbook
Japanese title: ガチ妹性交記録～大好きなお兄ちゃんとのイチャラブSEXなら神様も許してくれるよね？～
Circle: Akiba Maou
Megumi is the perfect sister: smart, beautiful, diligent and has an insatiable sex drive focused squarely on her brother.
What started as an accident, escalates into a full blown sexual obsession that her brother can barely satisfy...
*All characters depicted in this work of fiction are adults, regardless of their visual representation or textual description, and are not based on any real person*