世界最强的六岁小孩．诺亚，生来便是人生胜利组的皇帝第十三子，加上与生俱来就拥有等级无上限，还能将追随者的能力加到自身能力之上的作弊级技能。
因为王位继承顺位排得相当后面，诺亚向来也是在自己的领地悠哉生活。
然而他为人公正又具备聪明才智，年仅六岁便帮助了差点被卖掉的女仆、受到胁迫的歌手，更成功收服了水之魔剑利维坦。
在每天自由自在的生活中，将最强的力量、最强的部下收于麾下。
而就在此时，王位的继承人选却改为无关原先继承顺位与排名，由皇子彼此公平竞争。
身怀最强力量，足智多谋又有伙伴的诺亚，能否胜过其他皇子，最终坐上拥有世上至高权力的皇帝宝座——！？

Kaya-chan attends Hanamugi Kindergarten, and she has an incredibly strong sixth sense. She secretly beats up the ghosts that stalk her friends and family, but in turn, she’s treated like a troublemaker since nobody understands her strange behavior. Everything changes when her teacher, Chie, discovers her secret. Kaya-chan's fists will go flying at any sinister spirits that show up!

Kaya-chan attends Hanamugi Kindergarten, and she has an incredibly strong sixth sense. She secretly beats up the ghosts that stalk her friends and family, but in turn, she’s treated like a troublemaker since nobody understands her strange behavior. Everything changes when her teacher, Chie, discovers her secret. Kaya-chan's fists will go flying at any sinister spirits that show up!

因为喜欢上了完美的风纪委员学姐水鸟亚鸟，本性是好孩子的优谷优故意打扮成了不良少女的模样。然而，天生不会装不良的优被亚鸟当成了可爱的小狗。