Rine

Rine is a girl's childhood friend Aquila Yuna, appeared in episode 25 Saint Seiya Omega.

Last
It is a childhood friend of Yuna Eagle. A latter who made a promise to return, who did not return and so felt remorse, Rine was killed with all his people, except Yuna who escaped.

During the Holy War
When Aquila Yuna was swallowed by the darkness of the fight between Pegasus Kōga and Orion Eden meets the dark in appearance Rine realizing it was a reminder of guilt created by the Ruins of Darkness, Eagle Yuna defeats him and says that is why I became a Saint.