Everyone between the age of 18 and 29 worldwide is required to participate in the death game of twenty rounds. The main character starts his 100th challenge thanks to his ability to regress. Having ex...more

Everyone between the age of 18 and 29 worldwide is required to participate in the death game of twenty rounds. The main character starts his 100th challenge thanks to his ability to regress. Having experienced the game 99 times beforehand, he is able to become overwhelmingly more powerful than anyone else.