Become a Witch in a World Full of Ghost Stories is a Manga/Manhwa/Manhua in english language, Action series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.cc fastest updating comic site. The Summary is

Day1: Recently my eyes seem to be a bit off, always seeing strange things. Wait, the cabinet seems to be moving, I'll go check it out. Day13: I see them! Damn! Why is this world full of bizarre stories! ...... Day101: There's nothing to be afraid of anymore! Donning a witch's gown, I've become a weirdo!