The sexual harrassment parts were unnecessary. If you need to show seme being forceful, there are other less genital touching ways. It's in contrast to the depth the story is trying to portray too. If it had been explained further as to why he craves blatant sexual affection THAT FAST. then maybe just maybe we could see WHY he does them. Im not saying it would excuse his behavior but at least it would make sense to the story.
Nabigatoria ni Koi