Thank you for blessing us with your first post on the WaniKani forums! And good luck with reading the rest of the book - keep at it. 
If you weren’t aware already, there’s an ongoing book club to read ハリー・ポッターと賢者の石. They are on chapter 9 at the moment which might be a bit further ahead than you are. But you might find the discussions from the previous chapters interesting as you progress through the book.