Seto's Bride (1-16 volumes)

Publisher: Square Enix
Author: Taiko Kimura
Size: 128mm x 182mm
Number of books: 16
Language: Japanese
Category: Youth manga, manga
Latest publication date: 2011-02-22

Synopsis:
Nagasumi Makio, who went to her grandmother's parents' house in Setouchi, was helped by a mermaid girl, San Seto, who drowned in the swimming bath, but there was a rule in the mermaid. It means that if you see a mermaid from a person other than your relatives, you have to die. As a result, Nagasumi and San, who chose to die or become relatives, get married.