Description：An ordinary young man died in a terrible traffic accident, and was reincarnated into another world by accident. He was picked up by a wizard named Merlin (voiced by Yusaku Yara) who claimed to be a sage. Merlin named the lonely child Sean (voiced by Yusuke Kobayashi) and began to teach him how to use magic. In a blink of an eye, 15 years have passed. Sean has grown from a hungry baby to a promising young man. A good teacher produces a good student. Under the strict guidance of his master, Sean has already possessed very powerful powers. When Sean decided to enter the Alshat Higher School of Magic for further studies, Merlin discovered that for so many years, he had only taught Sean magic and had forgotten to discipline him with common sense. This means that Sean is about to enter school and face his peers without knowing anything about common sense.