"I was reincarnated again." "Rex, a reincarnated boy with two past lives—a Sage and a Hero. Having learned the dangers of standing out from the memories of those lives, he vows to live a simple third life as an Adventurer. But that "simple" is way too "extraordinary" for normal people! So begins the start of a new action-adventure fantasy game, staring the strongest boy with no self-awareness, overwhelming the people around him!