An unemployed otaku has just reached the lowest point in his life. Just as he thinks he can turn it around, he gets hit by a truck and dies! Shockingly, he finds himself reborn into an infants body in a strange new world of swords and magic. His identity now is Rudeus Greyrat, yet he still retains the memories of his previous life. Reborn into a new family, Rudeus makes use of his past experiences to forge ahead in this fantasy world as a true prodigy - gifted with maturity beyond his years and a natural-born talent for magic. Can Rudeus redeem himself in this wondrous yet dangerous land?