The path of Cain Suji, nicknamed "The Perdition of Nations," in another world, in the body of a teenager. Final book of the cycle. The further into the forest, the thicker the partisans. The more into the spirit world, the more questions. Tadashi masters begin to teach not only the treatment of spirits, but also what is not taught at the imperial college. Perfume again with his plans for young Master Tadashi. Enemies again who hate you just for being you. Everything seems to be as always and nothing new, but here...