Michishio Nagasumi's life couldn't be any more normal. In an odd twist of events, during his summer vacation he ends up almost drowning in the sea. Luckily, the cute mermaid Seto Sun appears to save him. However, Sun 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 Sun. In attempts to save both of their lives, Nagasumi asks for Sun's hand in marriage. Nagasumi's summer vacation reaped more than what he would expect, as he must now protect Sun from others finding her secret out.

Fan discs containing shorts that weren't included in the TV series.

1. Aoi Koi-hen
2. Ibara Koiji-hen

Music videos from both discs are not included in the entry, as they don't contain any new scenes.

The same specials were included in the Blueray box set, but divided into 6 episodes of 2 minutes each.

30 seconds sketches/omakes from the OVAs.

The Seto no Hanayome OVAs are new stand alone shorts with characters from the series and also two new ones. It is now the third year of school, San and Luna's dads are still being over protective. All the while Nagasumi has his hands full trying to keep everyone around him under control and rescuing damsels in distress.

[Source: Anime News Network]