The Miraculous Meeting and the Phantasmagorical Adventure Part 2

Arifureta: From Commonplace to World's Strongest – Season 0

After a run-in with a mysterious creature at sea, Hajime and his party’s search to find Myu continues in the ruins of an ancient city. Myu is miraculously saved by Meiru Melusine just before monsters pour into the city. Hajime’s party must team up with the Liberators, here from the past and armed with the magic of the gods. Together, they must defeat the horde in the second OVA of this story.