Yep, it's abuse. Physical, verbal, and now neglect. Kiji is a little pychopath who lacks empathy.
The alien parents are assholes, too, though. Of all places, they planted their murder-egg in a park within human habitation.
Isn't it also starvation and dehydration as well?
That falls under neglect.
Is anyone else thinking the way hes treating the butterfly is abuse? Because that thing wanted to escape and he just thought it was normal