Shingi: The Spirit's Playbook

Junbeom runs into Jina, an exorcist who captures mystical monsters called "Shingis." She gives Jumbeom a bell to protect him, which unexpectedly turns Junbeom into a shingi! Desperate to return to his regular human self, the two look for the man that sold Jina the bell, but he has disappeared. They follow a lead and locate the billionaire who owned the bell before a burglar stole it from him. However, Junbeom and Jina must first catch the burglar before he's willing to help. Will they ever succeed in returning Junbeom to his former self? (Source: Webtoon Entertainment)