Seto no Hanayome

Synopsis Michishio Nagasumi's life couldn't be anymore normal. In an odd twist of events, during his summer vacation he ends up almost drowning in the sea. Luckily, the cute mermaid Seto San appears to save him. However, San is from a yakuza mermaid family and according to their law, if a human is to catch sight of a mermaid, either he or the mermaid must die. The only other way is for Nagasumi to be taken in as a family member, marrying San. In attempts to save both of their lives, Nagasumi asks for San's hand in marriage. Nagasumi's summer vacation reaped more then what he would expect, as he must now protect San from others finding her secret out.

Main Character

Luna Edomae (江戸前 留奈)

Height: 165 cm
Weight: 43 kg

Luna is a childhood friend and rival of San. She has used the powers of her mermaid voice to become a pop star idol singer. She seems to suffer from a superiority complex, and she never passes up an attempt to overshadow San. She initially thought that San was boasting Nagasumi to her, and in an attempt to outdo San she decides to steal him away from her by making Nagasumi her servant, since Nagasumi has also seen her mermaid form. Later she decides to live in Nagasumi's house until his servant status is over.

Nagasumi Michishio (満潮 永澄)

Height: 170 cm

Nagasumi is the protagonist of the story. Nagasumi is likely the only one in his family who has a clear head, apart from his grandmother. When push comes to shove, Nagasumi demonstrates large inner strength.

San Seto (瀬戸 燦)

Height: 167 cm
Weight: 45 kg

San is the daughter of mermaid Yakuza Seto Group's boss, Seto Gozaburo. She is a firm believer in the chivalrous spirit of mermaids, and is devoted to her role as Nagasumi's wife. Not yet being an adult, San is not able to completely maintain her human form, and her legs revert to a tail whenever she comes into contact with water.



San is well known in her school due to her figure, tall height, and model like appearance.