You Asked Me to Guard a Prison, So I Refined All the Gods and Demons

#Sign-In System #Playing It Safe #Invincible Protagonist #Play the Pig to Eat the Tiger #Heavenly Prison #Ruthless and Decisive Overworked office drone Chen Mo worked himself to death, only to open his eyes in an era of war and famine, among the starving dead! To survive, he risked his life applying for the most dangerous job in the Great Qian Dynasty: a guard at the Heavenly Prison. He thought he would spend the rest of his life in darkness and despair, but on his first day on the job, he unexpectedly activated the [Heavenly Prison Sign-In System]! [Sign in at the “Heavenly Prison Gates” and receive the “Dragon-Elephant Prison-Suppressing Art”!] [Sign in at the “Torture Chamber” and receive a “Spirit-Refining Pill”!] [Sign in at the “Demon Cult Saintess’s” cell and receive the “Indestructible Heavenly Demon Body”!] [Sign in on the “former crown prince’s” bones and receive the “Human Emperor Sword”!] The Heavenly Prison, a forbidden place holding countless nobles and peerless fiends, became Chen Mo’s personal treasure trove. He decided that until he was invincible, he would never reveal a trace of his power. He was an honest man in the eyes of the other guards, an insignificant nobody to the powerful, and a pushover the prisoners could bully at will. But no one knew that he was the true “hidden guardian” of the Heavenly Prison. Then one day, an immortal came flying on his sword, the imperial capital teetered on the brink of disaster, and the dynasty stood on the verge of collapse. Just as everyone sank into despair, a calm voice rang out from deep within the Heavenly Prison: “An immortal? You think you can cause trouble on my turf without asking me?”