Rule Breaker

When the Ghastly Night descends, horrors run rampant after dark. Delivery boy Lin Feng breaks into a haunted building to save his critically ill sister—only to accidentally activate the 'Rule-Altering System'! This system lets him rewrite keywords of the supernatural... and forcibly binds him with an SSS-rank, razor-tongued, demon-devouring entity. By sheer coincidence, he becomes a Ghastly Hunter.