I like ‘jaded’ but yeh, he’s still motivated. He loves killing these perverts.

Plus, he’s making a fortune from it (paid for by the outside force, the child trafficking ringleader who killed his son is using him as an unwitting debt collector).

The money the hero receives he feeds through his wife’s charity, which is how she deals with her grief/anger.

So the hero’s wife and daughter are opponents too.

The kid who infiltrates the gang falls in love with the daughter and actually becomes a fake-opponent ally, joining forces with the hero in the end to take down the outside force –

– the child trafficking ring-leader responsible for killing the hero’s kid and setting the hero up to kill the protege’s undercover agent dad.

So yeh, his wife and daughter are opponents.

The main antagonist is largely outside of the hero’s world until the climax, although we see glimpses of his operation at work….

the main story is the relationship between the hero and the kid who infiltrates his gang who he grooms for leadership, to the dismay of his daughter…