Responses
You're right, but Dai doesn't have any obligation to team up with the one that caused his mother death. I do understand his situation, but this doesn't mean that he is forgivable. And actually I'd I were Dai, it would be impossible for me to team up with him. Helping the kids was the right thing to do, but it wouldn't make sense for him to keep hanging out with the other guy.
I may be the bad one here(￣∇￣")
Okay, so now I feel bad for the fat guy. Clearly, what he did was wrong, but with his home situation, the pressure must have been horrible. Still, we see the REAL bad guy is the one threatening his siblings. So, Dai and Fat Dude need to team up to take down the REAL evil guy and save the kids. And the bully should die. I don't forgive him hurting Dai.