An alternate world (isekai) school gag manga. The manga follows Yamada, a company employee who is around 30, and a young demon king.
(Source: MangaDex)
SynonymsThe Demon King's Cute Yamada is a Good Girl, The Demon King's Cute Yamada Is A Good Boy, The Demon Lord's Adorable Yamada is a Good Boy, 魔王的可爱乖宝山田君, 異世界笑劇・魔王のかわいいヤマダはよいこ, MAOH no KAWAII YAMADA wa YOIKO