Otaku Bai Xuan accidentally traveled through time and space and came to the world of Harry Potter. He didn't know the plot, but he knew that there was such a tragic character who lived for love and died for love. He wanted to save him, but then... There was nothing more. He was a homebody, what else could he do? Snape: If you come for me, you will stay for me. Don't try to leave my sight again!