Great Archmage Kaplan. Possessing the Body of a Boy Betrayed by His Childhood Friend. In the diary of the boy he accidentally discovered, it was written that he wanted to become a great archmage. "Shall I try once more?" Let's do it. In the end, those who were good at magic will be good at it again. *The copyright of this work's cover belongs to the author. *The cover features the character Flan from the story.