This is a story ultimately about a criel dragon and a psycho who wants them dead at any cost, like an Ahab and Moby Dick deal, lots of potential collateral guro opportunities. He or she was happily married. Had a whole bunch of kids and everything. The dragon attacked their home and murder-rapes everyone and burned everything. The dragon is an infamous and cruel beast known throughout the land. Demands and receives maidens and tithes yet even still goes about doing this stuff because he knows nobody can or will stop him. This has been going on for decades and everyone just turns a blind eye.

Mental trauma makes the person so bent on vengeance that they become literally purged from emotions and becomes a sick, twisted, but functioning sociopath. They seemingly would still resemble a normal human being, finds a new wife or husband, starts a new family, lives happily for some time, etc. But it's part of a plan that no one but they can grasp. When the time comes, and the dragon finds their family again, the family are coldly sacrificed in order to lure the dragon exactly where they want in order to get one clean hit in, utterly destroying the dragon's cock and slaying him, finishing the cruel spree of the realm's greatest monster, and becoming a legend for the wrong or right reasons depending on who you ask.