Agent AIKa

A devastating earthquake has plunged Tokyo—and much of the world—beneath the ocean. In the drowned remains of the city, Aika makes her living as a salvager, diving into submerged ruins to recover what’s been left behind.

When she takes on a high-risk job to track down and secure a mysterious object known as Lagu, the search quickly turns into a contest. Aika soon realizes she isn’t the only one hunting for it, and the depths hold more danger than sunken debris.