Ik someone already said it, but the first guys have a cameo in Zombie Hide Sex http://www...

I don't think this amamatsu and that amamatsu are the same coz that one was a delinquent and this one is not exactly one.

Goshhhh, im gasping literally.. Woah another parallel, huh? ε=ε=(ノ≧∇≦)ノ

Yess!! I checked the name and it's the same! I'm really sad about their other friends...