Kenja no Mago

Set thirty-five years before Shin met Merlin, at the Earlshide School where Merlin was a troublesome student, Melinda was a brilliant girl, and a prodigy named Kyle was living a ruthless life in college. When Merlin and Melinda began dating, the news of their relationship spread all over the city. Kyle who received reports of it congratulated them but was actually seething with jealousy. After graduation, Merlin and Melinda became hunters while Kyle became a magician.

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!!