The Iridescent Lyra Knight

A new girl has arrived at Sanctuary in Athens to become one of Athena's Saint Knights. Her only problem is getting by in the ranks without much proper training or battle experience. Nonetheless, she doesn't even have a guardian constellation. The only proof of acceptance is her cosmo... which holds a much greater potential that she has little awareness of. Her talent and interest lies in singing and playing the lyre.
Unbeknownst to her and with the pope away, the one person in charge of the Citadel plans to exploit her lack of experience and her laidback demeanor. Of course with the Galaxian Wars Tournament appending, she's going to need the support of her new friends. One of the bronze knights plans to devote his contribution to the fullest to help her become strong.
Will the new girl embrace the true power of her incredible cosmo? Is she willing to utilize its potential towards earning her spot in knighthood? Will she succeed in overcoming her flaws and be able to thwart the sinister plans of the enemies she'll have to face? Can she tackle the hurdles which lie on her path to becoming one of Athena's Saint Knights? Find out as you follow her journey to knighthood, filled with cosmic power, music, thrills of the Galaxian Wars Tournament, and even some love.

Author's Note: Apart from my OC, I don't own Saint Seiya or the other characters involved in this story. All credit goes to one of my favorite mangakas: Masami Kuramada.