The Different World of Demon Lord

Demon Lord! A symbol of terror and evil! Killing and death are associated with him! In a magic country, a being was summoned. This being was the most demon lord unlike of all demon lords in history. “Your majesty demon lord, please sign a document here. But please be careful not to put your hand at the wrong place.” “Your majesty Ya Lin, human army are invading us but I will protect you with my life!” “Hate you! Don’t come closer! You are a real pe*vert demon! I hate such demon the most!” O God, what is this? I just wish to be an ordinary person with carefree life and stuffed with food till death. Why I am the one who will become the future husband of the demon princess, the future demon lord? And also completing a near impossible task ——-resurrecting my mother-in-law? Luckily becoming a demon does have its own benefits, granting each demon ability to cultivate skills. However, what type of circumstances are this, mission going to other worlds and conquer them?