A debugger of the Beast Master class who has had a run in with the triple threat that they had all initially forgotten what it was about. It turns out Triple threat was training close to a barn when Muria was raising beasts and they ended up setting fire to it and slaughtering the unicorns inside for the experience. After school, Muria works in the customer service department of dexon, identifying and patching bugs in Lost Saga's code. In the end she accepts a deal with Dexon to become a mini-boss for the demon invasion arc. She becomes a super powerful beast master capable of taming a legendary dragon called Diamet, Muria takes on the name Pristina as one of the 4 horseman from the demon army. She battles against Ah-dol, Boromir, Il-ban and Capri. She ends up pressuring to the point Il-ba