Seasons & episodes

S0 · E1Jin 2008-11-28 · 24 min＋

A new semester begins where Nagasumi, San and the others are third grader seniors. Everyone got into the same class except Nagasumi got sent to the eighth middle school, class zero where in a classroom full of delinquents. Unable to cooperate with his new class, their homeroom teacher Shark Fujishiro plans to make a killing spree session on his first day of homeroom. Meanwhile, a new student has came to Sun and Lunar's class who turns out to be Lunar's Papa who is dressed in a female middle school attire along with an apron. This disgusts Lunar and makes a whole ruckus in the class. When Seto Gozaburo asks them to quiet down, Lunar's father tells him to not interfere and the two start a fight. Lunar and Sun leave to find Nagasumi and get him back to his seat to clear their situation.

S0 · E2Gi 2009-01-30 · 24 min＋

The first half of the episode has Shiranui working in a maid cafe to pay off the damage she did to the store. Sun, Mawari, Satori and Lunar offer to work there also, and a 'competition' begins between the four. At the end, the store is destroyed again. The second half of the episode starts with a flashback scene from when Sun was a child, playing with her friend, and they make a promise. Then, Lunar and Nagasumi are watching a horror movie in the house while the others are out. Lunar freaks out and a zombie girl appears in the house. A few things happen, and the so-called zombie girl tells Nagasumi that 'It's all your fault.' The next day at school, she appears again and attacks all of the students except Lunar, who cowers in the corner. Sun returns and finds that the zombie girl is her childhood friend, Saturn. Saturn leaves, and they make a promise once more.

The first part starts out with gags and the characters drawn in a simplistic chibi style. It's followed by a quick recap and then goes into the main picture drama story.

No episode summary available yet.

No episode summary available yet.

No episode summary available yet.

No episode summary available yet.

No episode summary available yet.

No episode summary available yet.

No episode summary available yet.

No episode summary available yet.

S1 · E1A Yakuza's Wife 2007-04-01 · 24 min＋

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 to stay alive, they have to get married. Little does Nagasumi know that Sun's mermaid clan is in fact a Yakuza organization.

S1 · E2Legend of the Ring 2007-04-08 · 24 min＋

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 with water and must protect her by drying her legs.

S1 · E3Island Closest to Heaven 2007-04-15 · 24 min＋

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 Shell" Maki, is after his life.

S1 · E4Life is Tough for a Guy 2007-04-22 · 24 min＋

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 and eventful.

S1 · E5Targeted School 2007-04-29 · 24 min＋

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 attacks from his new "teachers".

S1 · E6Ojou-san, Be Gentle with Me 2007-05-06 · 24 min＋

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 same time trying to save Mawari's life from the mermaid code of law.

S1 · E7Visitor 2007-05-13 · 24 min＋

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 of Sun. Lunar soon makes a plan to settle the score with Sun once and for all.

S1 · E8Crash 2007-05-20 · 24 min＋

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 and Lunar, with Nagasumi himself as the collateral.

S1 · E9Battle Runner 2007-05-27 · 24 min＋

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 hand in marriage during Sports Festival Day.

S1 · E10Man of Steel 2007-06-03 · 24 min＋

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 start running for their lives. This episode is a slight parody of Terminator 2: Judgment Day.

S1 · E11Armageddon 2007-06-10 · 24 min＋

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 drinks it by accident, not only giving him the powers of a merman, but also growing him to gigantic proportions.

S1 · E12Love Slave 2007-06-17 · 24 min＋

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 gets to the point where Lunar starts to come on to Nagasumi while outwardly stating that she would never fall in love with a human. Through many badly timed, but well-meaning errors, Nagasumi ends up being engaged to Lunar.

S1 · E13The Poem of Love 2007-07-01 · 24 min＋

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 refuses to continue with the wedding. Suddenly, Sun appears and voices her disagreement with the wedding as she uses her sword to defeat Lunar's guards and announce her love for Nagasumi.