Kenja no Mago

Synopsis

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"! An "abnormal" boy's unconventional other world fantasy life starts here!! (Source: Kadokawa, translated)

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