Devil King Academy's Rebel: Mankind’s First Devil King Candidate is Aiming to Rise to the Throne Together With His Female Retainers

To demons, humans are nothing but slaves. Morioka Yuuto, an ordinary high school boy, is selected as a candidate to be the next demon king. He is admitted into Ginsei Academy, a school for demons where he's scorned upon by the other students.
"...I'll make you the demon king. So... make me your kin."
After meeting Himekami Rizeru, a beautiful demon girl, Yuuto's world begins to change.