when their first child got mad and left klopp and the second one was killed by accident...

The 2nd child is not killed by him. He is fine and better because he inherit his father's monstrous health.. confrimed by author

But it makes Ori Kloff more trauma that makes him shut himselfm on his room

the one that got hit on the head?!

Yes. Author said his wound is healed very fast.. but his father's trauma (in hurting his son) stays longer

damn deserved