After the deadly battle, the Saints of the Sanctuary all swear their loyalty to Saori—Athena. Meanwhile, Eris, who was thought to have been sealed, had fused with her host, Kyoko, and multiplied her powers. Saori rises against Eris to protect Shoko, but receives the curse of the apple. The Gold Saints head to the Temple of Eris along with the Saintias to save Athena and to stop the evil god from scattering the Evil Seeds of war that fill people’s hearts with hate. That’s where Aiolia witnesses his own brother turning his fists against him.
Other than Eris, I've felt this 
evil Cosmo from somewhere...
عدا إيريس، فقد شعرت بهذا الكوزمو الشرّير من مكان ما
Es gehört nicht Eris und dennoch habe
ich es schon einmal irgendwo gespürt …
No es el Cosmo maligno
de Eris y me resulta familiar.
No es el Cosmos maligno de Eris
y me resulta familiar.
Où donc ai-je déjà senti
ce Cosmos maléfique, différent d’Éris ?
Non si tratta di Eris, eppure ricordo di aver 
già avvertito quest'oscuro Cosmo, in passato...
É diferente do de Éris... Onde eu já
senti esse Cosmo cheio de maldade?
Откуда-то чувствуется ещё
одно злое Космо помимо Эрис...