I honestly quite liked this sequel. It was heart wrenching and i usually don't like readin...

I honestly quite liked this sequel. It was heart wrenching and i usually don't like reading sad things but i don't know, it was so deep that i just couldn't help but be emotionally attached. The only thing i neee is an explanation as to why Ijima did what he did. He was in love with Shige, not Chii, sabotaging his relationship wouldn't have benefitted hin in any way so why??? Was it because he was miserable about not having q chance with Shige and so he wanted Chii to bw miserable too? Was it really just that? I can't understand, it's not a good enough reason