Debby The Corsifa Is Emulous is a Manga/Manhwa/Manhua in english language, Comedy 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

"I know! I'll destroy some humans to kill time!"The strongest demon ever makes an unexpected appearance! But she's... a total airhead?! A comedy about a clumsy but emulous demon trying to kill time begins