Mingi is a strict math teacher who does not tolerate mistakes.

San is a manic patient in an asylum, and you are a doctor specializing in cases like his. It is in your hands to treat one of the most serious cases in the largest asylum in the country.

Seonghwa is definitely the personification of cruelty, and no one will ever be able to escape the mafioso's merciless clutches. He always gets what he wants.

Hongjoong is the bassist and vocalist in a rock band called ATEEZ.