Summer tutoring NTR: My annoying homeroom teacher and my crush have a sweaty, passionate lovemaking session... Kurumi Rei MIAA-301

I've been dating Ling for about five months. We're both busy with schoolwork and club activities, so the only time we spend together is when we walk home together after school. We planned to go on dates to various places during summer vacation, but Ling has to go to tutoring during the summer because her grades are too bad...