Kenja no Mago

A young man who had surely died in an accident,

was reborn in another world as a baby! After that,

he was picked up by the patriot hero “Sage” Merlin Wolford and was given the name Shin.

He was raised as a grandson by Merlin and soaked up Merlin’s teachings earning him some shocking power however,

when he became 15 his grandfather Merlin said: “I forgot to teach him common sense”.