OBA-301 — Frustrated Max Mom At My Friend's House While I Was Staying The Night Yukine Kuramoto

While my parents were traveling abroad, I decided to stay at my neighbor Kosuke's house. My mom had been telling me to study, so I was just planning to study with Kosuke. Kosuke is good at studying... But when I went to Kosuke's house, my purpose was instantly ruined. I happened to see Kosuke's mom masturbating. I quickly looked away, but the situation took an unexpected turn...