Adventure

In the world of demons where humans are simply an old folklore...

man who was once called the world’s strongest agent ended up becoming a teacher after his retirement, to train a new generation of agents. After many years of training his disciples, he was killed at the age of 60 by a secret organization’s ruse and was reincarnated in another world with his memories intact. Though he was surprised by the existence of magic and the strange species in that world, he quickly adapted to his condition as a newborn and took advantage of it.

Kyu was abandoned alone on the surface. After wandering, Kyu finds a boy who lives in an isolated snowscape.