Sonju

Sonju (or Sung-Joo) is a demon that lives outside Grace Field House. Sonju retains a stoic and composed personality, as he sometimes refrained himself from interacting with the orphans, and during the times when he does, he was known to intimidate them due to his appearance. Nevertheless, Sonju on a certain degree still care for the orphans' safety and have faith in them being able to break the promise.