One Punch Man: IMMORTAL

In the ghost town of Z-city, inside an abandoned building, a man suddenly seems to appear out of thin air... After few minutes, processing all the events that happened afterward, the man came to realize that he has been teleported to one punch man world... He was Alan, a lonely boy who had already lost his parents. Having being bored of his life, he started watching anime, reading manga, and fanfictions about it. With that, after what had happened, he was really happy because in this world he could achieve immeasurable strength and power like anime characters and finally hope to accomplish his dream of becoming immortal. And for accomplishing that he would do anything... Well, but I guess that is only a dream, after all, why would I want to make him immortal instead of being one?? (￣_,￣ )