Synopsis

A once-powerful Heavenly Demon, now reborn as the sickly second son of a merchant family, grapples with his new, weak body. He realizes he needs his soul-augmenting demonic art to survive, but he is aware of its cost and aims to master it differently this time. He embarks on a trip to a courtesan house, not for pleasure, but to gather information about himself and test his bodyguard's capabilities, showcasing a changed personality and strategic mind.