Demon King Daimao follows Akuto Sai as the lead character, who on the day he enters Constant Magic Academy, receives a very unexpected future occupation aptitude test result: “Demon King.”

The world’s number one assassin has been reincarnated as the eldest son of a family of aristocrat assassins. In exchange for being reincarnated in another world, a goddess has imposed…

Kazuma Hoshino moves to the beautiful countryside to take care of his little brother, Ayumu Hoshino. They ended up they getting lost on their way to the Japanese Inn.