Daughter of Mayahuel, one third of the ancient chimera and one of the golem guardians of Monica. Jin appears as an 18 year old asian woman but she can also take on the form of a serpent in a variety of sizes. She has her insecurities but keeps them covered with her rough exterior. She witnessed her mother try to destroy the calendar and get sucked out of this existence (only able to periodically communicate through Monica or Shelly) and is now responsible for repairing the calendar. She has attempted this several times already and always begins again at the point that her mother tried to destroy the calendar (these previous attempts are only referred to in the comic).