The Demon Instruction Manual
Boy sells his soul and is inducted into the demon acadamy
Mature
For strength to be gained, one must first be burdened with ache. For resolve to be stiffened, one must first be broken. For some heroes to be born, they must first suffer. Long ago, at the ruins of a shining city, an epic began. Long ago, at the base of a willow tree, a trial began. Long ago, under the full moon, a ri...