3 chapters left so I guess next chapter is the duel, then the one following that reveal the angel's true identity as the nun's soul or something, then last chapter they live together forever :3
Alright, so this is some bullshit.
Sandy orchestrated her confrontation with the ruffians in town.
The only thing Jack "owes him" is a swift kick in the dick.
But neither MC nor angel-chan know that he was the one who caused that.
So from angel-cham's POV she believes to owe him.
And that is all that matters.