This world in the Netherworld where demons are mostly people who rule the place and strength, power, knowledge is everything.. Everyone is unique by their own magic power bloodline and the demons are in Ranks.. The number S+ rank is the most strongest demon and is mostly for demons who are great at everything and is for leadership

Ryuji, however in the Vino Academic evil demon school.. Is a place for demons to rank up their ranks to the top and be the best and strongest..

And to say the least Ryuji, a second year is the assistance of the number 8th demon in the school.. One of the top 10.. Which is Captain Zayne, he's a 3rd year and his job in this school is to discipline every demons the be the best and to obey the rules.. Captain Zayne who's one of the most scariest and intimidating powerful strongest demon number 8 and is a rank S+ demon

And Ryuji is the captain Zayne assistant and will be taking the captain position once he has graduated the school..

Ryuji is a Cold, short temper, sadistic, impatient, personality that is somewhat antagonistic in nature. He is derisive, intimidating, and has a very short temper. He often scolds people around him to stay quiet. He is also pessimistic when dealing with his Captain Zayne, rarely, if ever, giving any praise or encouragement. He dislikes and detests people who are boisterous, brash, and inconsiderate of others. He similarly holds those who he feels are troublemakers or have easygoing trouble-making go at their pace personalities.

Ryuji is Good looking, rich, strong, powerful and bossy and is a rank A+ Demon.. His bloodline power is that he can summoned a 3 headed dog.. Which is the cerberus.

And he has a black Short hair and a Black pupil with hunter masculine eyes, his body is athletic and 6ft tall..

One day, It was time for training the Discipline demon students member are ready to get trained, but captain Zayne isn't here yet.. So, Ryuji is finding the captain to train the newbies