Eden takes Aria away, and Aquila Yuna and Pegasus Koga resume their journey, demoralized by their failure to protect their friend. Along the way, Yuna and Koga separate, meanwhile Eden and Aria reminisce about the happy days they shared during their childhood. Koga later meets a young man who first mocks his weakness, luring the teen Saint into a fight. Koga later realizes the man to be the owner of an immense Cosmo, and turns out to be Cygnus Hy?ga, one of the legendary Saints who protected Earth from great menaces many years ago. Hy?ga manages to teach Koga that to reach the true potential of his Cosmo, he must first believe in himself. After learning Hy?ga's lesson, Koga rejoins Yuna and both resume their way with renewed resolve.