Why Can't You Kill This Vampire?

"What doesn't kill me will only hurt me." "If you don't accept it, I'll let you kill me a few times." This is my 18th year of reincarnation in this world. Logically speaking, shouldn't reincarnation be about system, invincibility, and dungeon adventure? Could it be that reincarnation was just for me to experience the life of a vampire? It's pretty good though. But the turning point of everything happened in that "car accident" when I saved the count's daughter. The system also showed up. But I was confused, and I was still entangled between the human race and the vampire race, until I almost died... I have an immortal body, no matter how the enemy beats me, it will only make my flesh more elastic. You can become stronger by sucking blood, but you still have to die a few times when you meet a divine teammate. Okay, let's first try to take risks, meet by chance, and then rule the world... I will expand my territory and let new order come to various regions... Main elements, [Vampire] + [Laughter Exploration] + [Multi-element World View]