Sexy tutor

So-ra married Do-jin at a young age. She lives with Do-jin's father, Kang-hyeon, at her Do-jin's house. Do-jin, a re-student Sora who leaves her school, is taking her tutoring. Her tutor comes to her home to study Yeongi, and she runs into Kang-hyeon. Kang-hyeon sees her playing and imagines having sex. During her tutoring, Do-jin seduces her playing and makes her have sex.