Wise Man's Grandchild

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 Merlins teachings, earning him some shocking powers; however, when he became 15, his grandfather Merlin said, "I forgot to teach him common sense!" An "abnormal" boys unconventional other world fantasy life starts here!