Wise Man’s Grandchild is a Japanese light novel series written by Tsuyoshi Yoshioka and illustrated by Seiji Kikuchi. It began serialization online in January 2015 on the user-generated novel publishing website Shōsetsuka ni Narō. It was acquired by Enterbrain, who have published eleven volumes since July 2015 under their Famitsu Bunko imprint. A manga adaptation with illustration by Shunsuke Ogata began serialization on Kadokawa Shoten’s Young Ace Up website from March 2016. It has been collected in thirteen tankōbon volumes. An anime television series adaptation by Silver Link aired from April 10 to June 26, 2019.
A young salaryman who died in an accident was reborn in another world filled with magic and demons. As a baby, he was picked up by the patriot hero “Sage” Merlin Wolford and was given the name Shin. He was raised as a grandson and soaked up Merlin’s teachings, earning him some irresistible powers. However, when Shin became 15, Merlin realized, “I forgot to teach him common sense!” Diseum, king of the Earlshide Kingdom, recommends Shin to attend his Magic Academy, on the agreement of not using Shin for political warfare. In the capital, Shin rescues two girls, Maria and Sizilien, from thugs, and later he would inaugurate a club that consist of him and others.
Tsuyoshi Yoshioka originally started the series as a web novel. The series was acquired for print publication by Enterbrain, who published the first light novel on July 30, 2015.
A manga adaptation, illustrated by Shunsuke Ogata began serialization on Kadokawa Shoten’s Young Ace Up website since March 2016. Thirteen tankōbon volumes have been released as of February 4, 2020.