Control — the Commonwealth’s covert ops group — suspects a double agent within the Kingdom’s royal family and dispatches Ange and the rest of “Team White Pigeon” to discover the…

In a small fishing village, a gloomy middle school student named Kai meets a mermaid named Lu.

The story takes place in 19th century Europe, and revolves around John Watson. He is scouted by the government to become a secret agent. However, Watson lives in a world…