Shining Ark has a cameo character from Shining Hearts. Lorna Murasame can join Freed and Panis if you pick up a copy of the game with the angel fan disk, a bonus which includes the soundtrack on MP3s, a radio drama, and a digital art book. Since the fan disk was a preorder bonus for Shining Hearts, it might not be easy to come by anymore. If you purchase Shining Ark from the PlayStation Store before March 6 you can still get Lorna.
A code to unlock Seraphim is in the first print copies of Nana Mizuki’s album "Rockbound Neighbors." Shining Ark is available now for PSP.