GVG-244 Sister’s Real Sex Education Kokoa Aisu

Kokoa, who lives happily with her family but hasn’t had a lover for a while, was frustrated when her friend told her about her sex with her boyfriend. At that time, I was told that my younger brother had a lover for the first time. Kokoa teaches her younger brother, who has little sexual knowledge, how to interact with women, but the story goes in a radical direction, probably because of the complicated feelings of Kokoa.