S01E01 A Yakuza's Wife
Nagasumi, a teenage boy, is saved by the chivalrous mermaid Sun while drowning in the ocean off the coast of Seto Island. Mermaid society rules are strict — in order for both Nagasumi and Sun...
My Bride is a Mermaid
S01E23: Man Without a Past
Believing Masa was an acquintance of her older brother, Akeno asks Masa about her brother's whereabouts, but Masa had lost his memories before joining the Seto clan. Gōzaburō then reveals to Nagasumi that Akeno's brother is actually Masa himself. While unaware of this fact, Akeno intend to punish her brother's for his irresponsibility, forcing Nagasumi to protect Masa using any methods available.
Overview
Nagasumi's in hot water after a beautiful, young mermaid named Sun saves him from drowning. The deep-sea sweetheart's dad is a merman yakuza prone to executing anyone who learns his family's scaly secret! Luckily, there's a catch - if Nagasumi agrees to marry Sun, he just might avoid sleeping with the fishes!
Episodes
S01E02 Legend of the Ring
Nagasumi enjoys his first date with Sun at the Bon Festival. However, most stalls are operated by the Seto-Gumi. Later, Nagasumi soon finds out that Sun's legs revert into a tail when she is splashed...
S01E03 Island Closest to Heaven
Sun and Nagasumi get to spend a whole day alone on a deserted island. However, this is a trap meant to eliminate Nagasumi, as the group's notorious assassin and longtime friend of Sun's, the "Spiral...
S01E04 Life is Tough for a Guy
As a dutiful wife, Sun follows Nagasumi back to his house in the city, where she is to live with him and his parents. However, the first day back turns out to be quite hectic...
S01E05 Targeted School
Sun and Nagasumi attend their first day of school. Sun's father and the gang have all become teachers at their junior-high school, and Nagasumi's friend Sarutobi falls in love with Sun. Nagasumi must survive constant...
S01E06 Ojou-san, Be Gentle with Me
Mawari notices Sun's fishtail and comes to the conclusion that Sun is a fish. She keeps trying to splash Sun with water in order to verify her theory, but Nagasumi protects Sun, while at the...
S01E07 Visitor
Nagasumi runs into Lunar, a popstar idol; her mermaid form is accidentally revealed to him. In turn, Lunar plans on making Nagasumi her slave forever. He finds out she is a childhood friend and rival...
S01E08 Crash
The situation at school keeps escalating, and even Maki is hurt in the process. In order to avoid total war, Nagasumi comes up with a plan to settle everything in a singing competition between Sun...
S01E09 Battle Runner
Nagasumi's life only gets more hectic with the arrival of Kai Mikawa, a handsome, rich, but agoraphobic merman, who insists that Sun is his fiancé. Kai transfers to the school and challenges Nagasumi for Sun's...
S01E10 Man of Steel
A strange, huge, practically invincible man, stalks Nagasumi and nothing can get in his way. Nagasumi tries to tell his friends, but initially no one believes him. Eventually Nagasumi runs into Kai and they both...
S01E11 Armageddon
After Sun and Lunar go on a diet, Sun's father buys her all sorts of presents to help her out, including some special "mer-water" that energizes and gives strength. But many problems arise when Nagasumi...
S01E12 Love Slave
Nagasumi's mom and Sun go shopping for groceries, leaving Lunar alone with Nagasumi. Lunar plans to make her "slave" help her study for school since she is getting zeros on all her tests. Eventually it...
S01E13 The Poem of Love
Nagasumi is taken back to Lunar's house where a wedding ceremony is going to soon begin. Moments before Nagasumi is meant to become her husband, Nagasumi voices his disapproval of a false wedding, and promptly...
S01E14 A Kitten's Story
Nagasumi finds a kitten and brings it to school. Nagasumi soon discovers that Sun, Lunar, and Maki are all deathly afraid of cats, and gets the idea to test it on Kai and Gōzaburō too,...
S01E15 What's Your Name?
Nagasumi, Sun, Lunar, Mawari, Saru, and Mikawa go on what is supposed to be a double date. As Nagasumi goes to get a juice ordered by Lunar, he accidentally bumps into the class president in...
S01E16 Minority Report
Akeno Shiranui, a mermaid examiner has come to record and observe mermaids that doesn't fit well with humans and send them back to their origin. Now Sun must overcome her own fear and tries her...
S01E17 Prefectural Police vs. Gangsterism
Defeated by Akeno, a group of delinquent lords follow her around which mislead Mawari into believing Akeno was also a delinquent. In order to protect the society, Mawari decides to go all out against Akeno....
S01E18 Gate of Flesh
The whole class went for a sudden trip to Kyoto. After an incident where Maki attacked Akeno, Sun apologizes to her, but Akeno issues that she's interested in Sun's mermaid body and asks her permission...
S01E19 There is no business like show business
After the attempt to rid of Nagasumi from Sun fails. Akeno is now undertaking a mission, to foil Nagasumi by forcing him to gulp down a mermaid drink which will release mortals of their strongest...
S01E20 An Elegy of Men
Lunar's father searches for ways to express his love and cheer up his precious daughter when he accidentally spots a Galge from a search engine. Armed with his new "knowledge", an iron will and an...
S01E21 A Fuss About Love
Nagasumi receives a love letter from the class president. Being the first love letter he has received in is life, he completely loses his mind. Maki takes the letter from Nagasumi's pocket and reads it...
S01E22 An Idol
Lunar tries hard to practice her part in a drama. She gets Sun to help her be her lover as a man. Unfortunately, Sun goes overboard and eventually gets stopped. Afterwards, Lunar gets to her...
S01E23 Man Without a Past
Believing Masa was an acquintance of her older brother, Akeno asks Masa about her brother's whereabouts, but Masa had lost his memories before joining the Seto clan. Gōzaburō then reveals to Nagasumi that Akeno's brother...
S01E24 Farewell, Friend
Kai has an embarrassing problem about himself that he wants to keep a secret from others. It ends up that he just has a boil on his butt, however, Saru passes by the hospital where...
S01E25 The Family Game
It is first time that Sun and Nagasumi has a quarrel, and both end up not talking to each other. At the same time, the members of Seto Group are invited to join a party...
S01E26 The Place Where You Return
Nagasumi, Kai, and Lunar go to save Sun. Once they get there, the Seto Group manages to break free and a huge battle commences. Nagasumi manages to save Sun and he tells her he loves...
Cast
Takahiro Mizushima
満潮 永澄 / Nagasumi Michishio (voice)
Haruko Momoi
瀬戸 燦 / Sun Seto (voice)
Ayumi Tsunematsu
サーたん / Saturn (voice)
Atsushi Imaruoka
永澄の父 / Nagasumi's father (voice)
Takehito Koyasu
シャーク藤代 / Shark Fujishiro (voice)
Noriko Rikimaru
伊院千代 / Class President (voice)
Masahito Yabe
猿飛 秀吉 / Hideyoshi Sarutobi (voice)
Noriko Namiki
永澄の母 / Nagasumi's mother (voice)
Tomoko Kaneda
猿飛 悟 / Satori Sarutobi (voice)
Natsuko Kuwatani
巻 / Maki (voice)
Tessyo Genda
ルナパパ / Lunar's Papa (voice)
Kenta Miyake
瀬戸 豪三郎 / Gozaburo Seto (voice)
