START-301 When I saw my makeup-less sister, who I haven't spoken to in years, being played to have sex with a playboy, I felt like I had been stolen from her and I couldn't stop getting a traumatic erection Mei Miyajima

I've been estranged from my sister ever since I passed the entrance exam to a famous high school. One night, I invited Sugai, who is also attending the same high school, to my house and ran into my sister without makeup. That day, Sugai violated her,