The boy who is a shrine maiden does not want to marry

Mingxue, who died of an illness, was resurrected in Tokyo in a parallel world. Her appearance and figure were said to be like Yukinoshita Yukino in the anime.
What bothered him most was that there were ghosts in this world. In order to survive, he had to become a witch.
But can anyone explain why, no matter if it's the ancient witch with white hair and red eyes, or the innocent vampire lady, or the girl in black wielding dual swords, they all want to marry him!
Even those demons and monsters are the same, the problem is...
But he is a man!
I don’t want to get married!
【If you don’t like it, please don’t criticize】