Boku to Majo no Jikan

It was supposed to be his most lucky day ever right? so how did he end up dying? And if he's dead why did he wake up in a lab with a strange girl who says she wants to examine him? Not only has his hair turned white and his eyes red, but he can't seem to be wounded by anything. So much for a lucky day huh? [Wikipedia](https://ja.wikipedia.org/wiki/%E3%83%9C%E3%82%AF%E3%81%A8%E9%AD%94%E5%A5%B3%E3%81%AE%E6%99%82%E9%96%93)