悪堕ラビリンス ～囚われ魔王と奈落の狂人～
Aku Ochi Labyrinth -Toraware Maou to Naraku no Kyoujin
Protagonist Kuroudo frequents school that is called "Academy" which person of noble class commutes. However he the underachiever that doesn't have the talent in both the sword and magic, it was always made fun of from surroundings. And in the heart "Such a world, only have to ruin" it thought.
One day Kuroudo meets the girl siesta of Devil King who came from Hell. This benevolent Devil King who hopes for coexistence with the demon and human, it is said that it came to the human world for the sake of peace talks with the human race. However Kuroudo, a large amount of demons are called to the human world by using her such power, it is hit on to destroy this world.
When Kuroudo first takes siesta into the cave that exists coming off of from the town, it takes advantage of her timid character, it rules by violence and fear and the subordinate-superior relationship is made. And Kuroudo to summon the demon successfully, the cave is expanded and the dungeon is made, it begins to have straightened the armament aiming at fighting with human.
