by Masanori Ookamigumi Katakura

On their quest to resurrect Zero, Himeko and gang get dragged into a war between humans and mermaids. People have been catching mermaids and eating them, falsely believing their flesh would make them immortal. Unwilling to tolerate this meaningless massacre, Kaima, the chief of the merpeople, declares war! Can Himeko intervene and bring peace to the seas again?