Yeah but i think he will help them since he has changed for the better. At the beginning he was quite selfish and always blaming someone else with his actions but at the end i was shedding tears to how he has changed his perspective on things. So I believed he changed and started a new life in which he can have a happy ending.
Suffering is an everyday part of life. It is cruel and unfair but sadly it's also the reality that surrounds us. There are plenty of people like that all around us, people with stories and secrets we will probably never know.
All we can do is to try not to be a negative influence onto others and the world.
Hope your life goes well

But, The other people will still suffer,, for example the middle school boy, The policeman, the handsome guy and the girl Will never meet, but I hope he will do something about it, this is really good.