1 The beginning of the legendary hero.

One day a young man name Yosi who was a game company manager suddenly transfer to another world when he was going home after finishing his work and suddenly transfer to another world inside the body of 7 year child.Now he is being raised by his father who is also a hero name Yamane in this world.His learning capacity is extremely high.Yamane is very amazed that the Seven year child learning capacity is like a 23 year young man but he doesn't know that he is transfer from another world .His magic talent is unmatched. He surpassed his father in just 6 month.Then his father Yamane decided to send him to his father who is the guild leader of the world strongest guild.In this world his mother Rin was killed by a Rank S Level Monster when she protected Yamane by blocking the attack of that monster by her body.Yamane was getting weak because he was also badly hurt when he fought the S Rank Monster with his wife Rin at that time Yosi was just 2 years old. After watching his son performance now he told his son that now I can die without having any regrets.Yamane told his son go to the Yegdrasil kingdom your grandfather is the guild leader of the Yegdrasil kingdom and become the strongest man in the World.Yosi eyes is filled tears and promise his father that he will become the strongest man in the world and he start his journey to Yegdrasil kingdom.