This is Japan, where you "thank" the person who saved your kids, by killing theirs, because they didn't save your wife, your dog, and your grandparents too.
Nah, it's just the kind of shit MCs run into in various manga I've read, the kids the hero saves in the woods, were always abandoned there by their whole village, because their village guard parents died saving the village and there were still some casualties.
I swear to whatever god that exists this better not happen, not every character needs to be redeemed, some just need to die in the dust like trash so the main characters can grow and move on