Wise Man's Grandchild(2019)

In a world where magic has saved the human race from extinction several times, a boy named Shane is raised by an old man known as Maggie. Shin remembers the memories of his previous life and is busy learning magic with the old man. Shane doesn't have a good understanding and knowledge about the outside world and the situation becomes more difficult for him when Maggie asks him to leave home after reaching the age of 15...