Karakasa no Saien Manga Summary
The story of Ibusuki Rokusuke, a fellow who's trying to escape from a yandere girl who is quite literally crazy for him... and winds up being forced to put up with something even worse.
From Baka-Updates:
Ibusuki Rokusuke is unlucky enough to have a girl who's downright crazy for him. While trying to escape her twisted idea of love, he sneaks into an inn... which happens to be run by a witch who does not appreciate it when people try to stay without paying first.
...oh, and the crazy girl got there before him. Poor guy...