
Chapter 175 in the noval is chapter 89 in the comic. You can read on https://www.lightnovelpub.com/novel/under-the-oak-tree-540/

So here's the thing: I have hipersexuality. I have bipolar disorder so it's kind of a buy one, get two purchase lol. It is NOT untreatable, I takeeds that help me a lot and help me to achieve normal relationships. So if you, like Ryu, are experimenting this "urges", go! to! a! psychiatrist!!! They will help you! We're not a helpless case!
Somwthing a lot of people dont understand is that in korean law, the man is always on top. Even if his mother got a divorce instead of running away, she would not hat inwoo guardianship, his father would. There was very little she could do