On Kurono getting softer due to Tae, well, I don't think that's a bad thing; it shows humanity. Were it an alien offending or threatning someone he cared for, he'd have beaten the shit out of it, but it was just a jerk, who used to be the tought guy and is nothing to the current Kurono. Not being a bastard goes to show a certain development.
Even though I say that I also get a bit annoyed with him not punching that idiot ¬¬
But it's all cool imo ^^