The Demon King From Another World Likes to Tease His Childhood Friend (the hero) Because He’s in Love With Him ~The Demon King, Who Has Already Been Defeated, is Being Doted on by His Childhood Friend, the Hero~

Native title: 異世界魔王は幼馴染（勇者）が好きなので、弄ぶようです。～すでにデレている魔王は、幼馴染勇者に愛され中～(お月様版)