Just when it seems like Arata’s life on the island is finally calming down after his explosive duel with Mina, another castaway shows up—and what’s more, she’s a mysterious girl with amnesia. Arata soon finds out that she’s both humanity’s most powerful magician and Reina’s teacher! But before she even gets the chance to settle in, another familiar human has appeared! And another. And another... Just how many of them are there?! What’s worse, they’re scattered across the island and helpless against the powerful monsters inhabiting the area, so Arata has to run around all over to save them. This includes the territory of the Ancient Dragonfolk, and even the village of the yet-unseen Elves. Meanwhile, Sakuya’s romance makes a bit of progress. Several new people may have come to Arcadia, but life continues as always.