Baby Birth

Baby Birth (ベイビィバース) is a two-volume manga series written by Sukehiro Tomita and illustrated by Haruhiko Mikimoto.

Plot
Hizuru Oborozuki is a student of the TIAA, a prestigious arts school in Tokyo, and the local ace of ice skating, though she doesn't train much. Takuya Hijo is a young composer who has written a melody for the competition Hizuru's going to take part in.

His music awakens in her a new energy. Takuya reveals that they are the only two descendants of Teous, who in ancient times sealed a race of demons, the "Suspicion", who are now free and back on earth. Through Takuya's music Hizuru transforms into a beautiful warrior, ready to fight to protect the world.