Because Iruka's too prying,and losing the boy's trust is not an option now that that he finally has it. But trust is meant to be tested, and now, Iruka think's he's failed. IruNaru Rated M for language and implied or possibly potential rape

They had all watched Naruto being buried, but even 4 years later, while Sakura has come to accept this mysterious new man with hurtfully familiar eyes, Sasuke can't help but hate him. Until he learns...SasuNaru