Problem Children Starting from the King of the Undead

What kind of fluctuations will a troubled child who pursues excitement and happiness but hates boredom cause in an infinite world? As long as it can bring pleasure, then it is possible to become the demon king who destroys the world or the savior of mankind! So please watch, this is a wonderful journey of a troubled child back to Izayoi. The first world: King of the Undead... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.