Kenja no Mago, Wise Man’s Grandchild or Philosopher’s Grandson is an anime from 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, which have published fifteen volumes since July 2015 under their Famitsu Bunko imprint.
In the Kenja no Mago anime adaptation of the series was announced in September 2017. The anime, which was later confirmed to air on television, was directed by Masafumi Tamura and written by Tatsuya Takahashi, featuring animation by Silver Link with character designs by Yuki Sawairi and music by Kow Otani.
In the kingdom of Earlshide, Merlin Wolford was once regarded as a national hero, hailed for both his power and achievements. Preferring a quiet life, however, he secludes himself deep in the rural woods, dedicating his time to raising an orphan that he saved. This orphan is Shin, a normal salaryman in modern-day Japan who was reincarnated into Merlin’s world while still retaining his past memories. As the years pass, Shin displays unparalleled talent in both magic casting and martial arts, much to Merlin’s constant amazement.
On his 15th birthday, however, it becomes apparent that Shin only developed his combat skills and nothing else, leaving him with blatant social awkwardness, a lack of common sense, and a middling sense of responsibility. As a result, Shin enrols in the kingdom’s Magic Academy to hone his skills and mature among other teenagers. However, living a normal life is impossible, as he is established as a local celebrity almost as soon as he arrives.
Kenja no Mago follows Shin Wolford’s high school life in the capital as he makes new friends, learns about the world, and fights off the various forces of evil surrounding him and his city.