魔王おじさんと契約生活はじめました

女子高生リアンはある日、「魔王」を名乗る見知らぬ男に遭遇する。One day, the high school girl Rian ran into a strange man who claimed to be the "Demon Lord". And he asked her to become his demonic familiar? Despite some demonic bad habits, it turns out the Demon Lord is actually a pretty nice guy? It's a happy buddy comedy about a demon king and a high school girl who are tied together by fate!