You're browsing the GameFAQs Message Boards as a guest. Sign Up for free (or Log In if you already have an account) to be able to post messages, change how messages are displayed, and view media in posts.
You need to fuse a Jack Frost using any two personas that will result in a Magician-arcana persona. The average levels of the personas must be between 5 and 8.
Then you need to get Jack Frost enrolled in medical school. It's difficult, given that you have a very small window of time to actually complete the game, and medical school is a long and complicated process (usually taking several years), but don't give up. Talk to Mitsuru; perhaps she can get him a room at the dorm.