Rin used to be a very prosperous elf king and one day his kingdom was destroyed by a mysterious entity

And the mysterious dark entity advised Rin that if he wanted his kingdom back, Rin had to find and kill the princess of light and at that time Rin traveled and found the princess of light

the first time Rin saw a princess of light he fell in love with he couldn't kill her so he went and killed himself

and at that time Rin was always reincarnated with the same mission to kill the princess of light, Rin, who had already fallen in love, continued to kill himself

Rin continues to be reincarnated until...

Rin woke up from his sleep and today he has to go to school, he always remembers the memory of the past when she entered class for the first time he met the same girl who was in his dream

Will that entity continue to force me for thousands of years?