Hataraku Maou-sama Finally Reveals Details on Maou's Backstory

The Devil Is a Part-Timer returns with a second season and the devil seems to be in new trouble other than just managing a household.

Hanzō Urushihara, Hataraku Maou-sama! Wiki

はたらく魔王さま! 11 [Hataraku Maou-sama! 11] by 和ヶ原 聡司

Hataraku Maou-sama!! - Episode 7 discussion : r/anime

Review: Hataraku Maou-sama!

はたらく魔王さま! 5 [Hataraku Maou-sama! 5] by Satoshi Wagahara

はたらく魔王さま! 7 [Hataraku Maou-sama! 7] by Satoshi Wagahara

Sadao Maou, Hataraku Maou-sama! Wiki

Light Novel Volume 3, Hataraku Maou-sama! Wiki

Source of Info for Hataraku Maou-sama! Novels on Tumblr