Mega to Giga, eh. I'm getting Guyver vibes.
I like the fact that after Hiyou got up from the first punch Kuro went and delivered another straight away without hesitation. I am also glad there was no 'I won't kill you' nonsense, she actually said she was going to end it all and the guy clearly deserved to die. Ah, the differences between a shounen and a seinen. Although I wouldn't be surprised if Hiyou is actually still alive somehow.