For me the beginning, the part from seeing the apartment burn up to where MC moves back to his old home is the weakest part simply because I kind of didn't know where to go with it at the time and I wanted to start the "actual" story, it's kind of the same with the first molesting Kat scene, I had it planned from the beginning and it never felt like the right moment so I pushed it further and further back until I decided I pushed it long enough and just put it somewhere, but honestly I still feel like it was too early.
I've been changing the intro part a lot since the first release though, most people who haven't played the initial release might not understand how bad it was since it's a lot better now, but I'm still not really satisfied^^