Mizu Wakusei Nendaiki

The series consists of seven volumes, beginning with *Aqua Planet Chronicle*, followed by *Aqua Planet Chronicle After*, *Aqua Planet Chronicle Around*, *Aqua Planet Chronicle Jade*, *Aqua Planet Chronicle Blue*, *Aqua Planet Chronicle Final (Runyan)*, and concluding with *Aqua Planet Chronicle Monthly Sachisachi*. Each entry appears to be a separate installment within the same overarching title, suggesting a long-running or serialized format. The titles indicate a thematic or chronological progression, with some suggesting specific time frames or thematic variations. No further details about characters, plot, or setting are provided in the source.