FOCS-276 G-cup busty introverted stepsister with a complex about her figure, a shut-in NEET. Though her chest is prominent, her personality is shy and reserved. She finds emotional release through intimate sex with Yuki Koiro.

When I returned to my parents’ home after a long time, I heard that my stepsister, who came from my parents’ remarriage, had apparently become a shut-in, so I grew worried and went to see her. It seems Koiro had been teased about her large chest, and that was the reason she had withdrawn from everyone. As I tried to comfort Koiro and do something brotherly for once, her expression gradually began to change… Since we’re step-siblings, it should be fine, right? But I ended up giving in to her charm and being swayed by her alluring appeal.