Responses
It was the sensei who leave, yes. But he was leaving because he know well that egoistic dude want a perfect family with his own children. The dude can't be firm that he want sensei and no matter what else, yet he want to have everything instead. Now he has the children, finding himself single as well as sensei. HAS THE AUDACITY TO 'CHOSE' sensei. Like???? The F
TOTALLY UNDESERVED.

"It's that too late? I'm going to choose you from now on"
THE AUDACITY!!! So he get his cake, now thinking has the chance wanna keep it too??!!! Who the fuck he think he is to be qualified after putting so much pain on others. What the name of this behavior? The gal to wish a love from someone he abandoned just because he wanted to have children.
I'm so sad the creator choose to just white washed this