The MC’s friends and allies end up betraying him after he defeated the Demon King, everyone in his village gets massacred, got framed, and blamed for crimes he didn't do, he lost his mom, cousins when he was younger, and lost his older sister and unborn nephew when he was the hero, gets locked up and tortured physically, psychologically and sexually by the princess. He manipulates a goddess (who has an obsessive love for the MC) to resurrect him and he is highly motivated to give his false comrades the most agonizing and humiliating deaths imaginable. Where he becomes a vengeful, sadistic psychopath that brutally, mercilessly, and ruthlessly murders his victims.