[CACA-287] 【VR】The reason why my brother, who was ridiculed for being a virgin, visited my sister's room in the middle of the night Rio Kotomi

My sister comes to my room almost every day and makes fun of me as a virgin. Today, he showed me his pants in front of me and teased me by pretending to masturbate ... I couldn't stand it anymore, so I decided to do something erotic secretly while my sister was sleeping. Even if you take off your clothes and touch your nipples, you won't find out, so your sister gets up when she's playing with her through her pants in tune ...! However, from my sister's mouth, there was not a swearing, but an unexpected word, "I want to do it too." Yes, all of this and this were according to my sister's calculations ...