Wise Man's Grandchild

is a Japanese light novel series written by Tsuyoshi Yoshioka and illustrated by Seiji Kikuchi. It began serialization online as a web novel in January 2015 on the user-generated novel publishing website Shōsetsuka ni Narō. It was acquired by Enterbrain, who have published 6 volumes since July 2015 under their Famitsu Bunko imprint. A manga adaptation by Shunsuke Ogata began serialization on Kadokawa Shoten's Young Ace Up website from March 2016. It has been collected in 9 tankōbon volumes. An anime adaptation by Silver Link premiered on April 10, 2019.

Plot
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!!