IENE-034 — Big Brother, I'll Do It For You. Momoka Nishina

My brother, who is a repeat student, always goes back and forth between his home and cram school, and since he doesn't have a girlfriend, he masturbates all the time. But he finally got to the point where he masturbates while peeking at me and him having sex at home... But he confessed that he couldn't concentrate on his studies because he was always thinking about me! Brother, is there anything I can do to help him?