Fianna Jaysen is one of the new female protagonists that joins in the second half of Eternal Darkness. A young woman whom has not had an easy life and hopes to become a doctor in order to save people. When Mirai comes into the picture, Fianna's other self will start to make more appearances to teach Fianna an important lesson.
Fianna comes from the Celtic origin. In Celtic, the meaning of the name is legendary tale.
Jaysen is Greek and its meaning is healing.
Fianna is a quiet and kind person but doesn't hold much confidence in herself.