The Great Demon King's Road to Playing Truant After Reincarnation

The big devil who accidentally lost his memory and mistakenly thought he was a time traveler was reincarnated successfully, but... Why did he have to go to school even though he traveled through time? Every day is harder than the third year of high school! In order not to continue studying, Bruce decided that he would skip school. When the Demon King was reincarnated, he accidentally merged with the soul of a traveler from another world. He lost all his memory and became a child. He grew up on Mirror Island, a sacred place for magicians who have always been fighting against demons. Because he did not want to continue his studies, he skipped school and went to a continent where magicians are very popular. Because he was an unofficial magician, to avoid being caught back, he had to pretend to be a three-legged cat swordsman and become an adventurer. He started his own adventurous life as a crappy adventurer.