Luce Effer is the boy who was excited for his first real day of high school, but his dreams are immediately crushed as a pink haired girl named Yarah vows to protect him from parallel supernatural beings who want him dead for being known as the 'King of all evil' in every one of the 5 known dimensions. But besides the fact that these extremely powerful beings are coming after him, and the fact that his only protector is a yandere, he is also known as the last remaining Luce Effer.. And with the luck of being the weakest one of the other parallels. What the heck is going to happen to this unfortunate kid?