You're Quite Slothful, Dracula

Hello, my name is Dracula, Lord of the Vampires and King of Dragons. I used to be a shut-in. After transmigrating to this world and becoming a paladin named Gabriel Belmont, I thought I was on the path to a life of promotions, a raise, and marrying a rich beauty. But the organization declared that I had been chosen to be the savior and ordered me to save the world. After finally managing to save it, I was branded a class enemy by those bastards in the Brotherhood of Light. And what the hell is with those little brats calling themselves my descendants and going around with the Belmont name? Heaven knows Mary is my fiancée, but I haven't even touched her! After fighting my way through countless battles, I finally became invincible. But then some System popped up out of nowhere and forced me to save the world all over again. After all, a person can't spend their whole life thinking only of their own interests. So tell me, how did I, a shut-in, end up becoming Dracula?! I'm done. I'm not doing this anymore. His Majesty Dracula, King of the Vampires, is gloriously slacking off again today.