Synopsis
Isekai + System + Invincible + Comedy + Villains + Demon Suppression Bureau Gu Qingfeng gets transported to a fantasy world crawling with demons and monsters, and somehow ends up as a jailer inside the Demon Suppression Prison under the Great Yan Dynasty's Demon Suppression Bureau. After that, strange things start happening in the prison on a regular basis. This place used to be known as hell on earth — dark, terrifying, the kind of place that had a reputation. Not anymore, apparently. Why are the demons and monsters crying out miserably every single night? Why has the corpse demon…
