eichi is a very lonely person and by extension that makes him a little possessive of what he has because he is very isolated and constantly acts as the villain or an emperor so the few good things he has he wants to keep forever because he feels as if he doesnt deserve them he clings even harder and hes especially jealous of people like tomoya because tomoya leads a life he can only crave and he wants normalcy and he wants to have the regular experiences that everyone else has had and*explodes
