SHIJOU SAIKYOU NO DAIMAOU, MURABITO A NI TENSEI SURU

Shijou Saikyou no Daimaou, Murabito A ni Tensei suru summary:

The greatest demon lord in all history, Varvatos, has reigned for several millennia as absolute ruler. Now, there's only one thing left for him to do... enjoy the life of an average commoner! When he reincarnates as a villager in an unspeakable city, everything seems to go as he expected, but there's just one small problem: even when he restrains himself, Varvatos is still too strong! In a short time, rumors about him spread, and now, all sorts of men, women and assailants are approaching him! The quiet life I'd always dreamed of seems so far away...

The greatest demon lord in all history, Varvatos, has reigned for several millennia as absolute ruler. Now, there's only one thing left for him to do... enjoy the life of an average commoner! When he reincarnates as a villager in an unspeakable c