After a pretty mermaid named Sun saves him from drowning, Nagasumi has to make the choice to either marry Sun or sleep with the fishes.
Nagasumi takes Sun to a festival so they can get better acquainted before their wedding.
Nagasumi tries to find the right time to tell Sun he must return home.
Sun and Nagasumi explore the sights and sounds of the city; Nagasumi has to confront a couple of bullies.
Sun makes quite an impression on her peers on the first day of school.
Mawari thinks there's something strange about Sun, so she starts investigating. When all signs point to a dangerous situation, Sun might have to reveal her secret in order to protect her friends.
Takahiro Mizushima
Nagasumi Michishio
Halko Momoi
Voice
Sakura Nogawa
Natsuko Kuwatani
Kenta Miyaki