What was up with the ending? How the heck did Yuzuriha and Yato survive?
They stated that Atla teleported as many Saints as he could out of Hades's attack.
Is Seraphina a member of the Solo family ? It was stated in the original series that Poseidon always choose the Solo heir as a Soul Jar.
He didn't even awaken this time. Athena's seal was never removed from the holy amphora, left untouched, so Poseidon was asleep the whole time. What manifested through Seraphina was his sheer power contained in the orichalcum.