Oma Oma ~

Oma Oma ~ is an anime episode of Kenko Zenrakei Suieibu Umisho that was released on 09/19/2007

Plot Summary

Oma Oma ~
RomajiOma Oma~
TV Air Date
September 19, 2007
MangaCh. 50-52 (Vol.4), 74-75 (Vol.6)
Theme Music
Opening"DOLPHIN☆JET (Dolphin Jet)" by Ayane, lyrics and composition by Chiyomaru Shikura, arrangement by Kōji Ueno
Ending"Splash BLUE~太陽とレモネード~ (Splash Blue: Taiyou to Lemonade)" by Ayumi Murata, lyrics and composition by Urara Takai, arrangement by Kōji Ueno
Insert"DOLPHIN☆JET (Dolphin Jet)" by Ayane, lyrics and composition by Chiyomaru Shikura, arrangement by Kōji Ueno

On the second day of the Kantou regional tournament Umishou performs much better than on the first. A very dominant Amuro wins the 100 m freestyle preliminaries and Momoko wins the 100 m freestyle finals with a personal record. After these races, Amuro reminds Kaname of his promise to reward her if she wins an event. Takeda wonders what she will want as a reward, speculating it might be a kiss. As Kaname starts daydreaming about this possibility, Takeda starts daydreaming about having Mirei do whatever he wishes in case he wins, only to be reminded by Kaname that Mirei has nothing to do with it and that Takeda is not even in the tournament. Takeda, getting all worked up, reacts that his heart is swimming with Mirei as she competes. Makio tells them that she wants to be in the tournament as well. As Kaname thinks about camaraderie and swimming together, Amuro appears next to him, saying there is a group of people looking like Makio. When Kaname tells her they are from Tamatsuka High School, whose team will be in the medley relay event as well, Amuro decides to go meet them. There, she meets Nagi Shindou, who is part of Tamatsuka’s team. Nagi compliments Amuro on her swimming and tells her she likes active girls like her and that it is too bad Amuro is not in the medley relay, before she leaves, watched and admired by several Umishou members. Amuro spots people swimming and decides to join them, jumping into the pool without paying attention to anyone using it. She collides with a shy girl, who looks like Nagi. After exiting the pool, Amuro tries to have a chat with her, but the girl crawls away, chased by Amuro. After losing sight of her, Amuro seems to meet her again in a restroom, but this time the girl is much less shy and talking on a phone. As a confused Amuro leaves the restroom a girl runs into her; again looking like Nagi. She apologizes multiple times for running into Amuro before running away again, confusing Amuro even more.

At the start of the medley relay Momoko and Sanae notice Maaya got over her depression. A confident Umishou team watches as Tamatsuka’s team appears. To everyone’s shock it is comprised of quadruplets, the Shindou sisters Mimi (the one Amuro met in the pool), Mayo (the one Amuro met outside the restroom), Ai (the one Amuro met in the restroom) and Nagi. Meanwhile, having overslept, Ikamasa arrives, dressed very casually. After commenting on this, Kaname notices the Tamatsuka students on the balcony are all standing up in neat rows with one of them standing in front facing them, a small stick in hand. The race starts and Maaya, profiting from a good start, takes the lead. Then, suddenly, Mimi, in 5 place, starts speeding up and soon is in 2. Makio comments that Mimi’s movements are as precise as the rhythm of a song. Hearing this, Kaname suddenly realizes the Tamatsuka students, forming a choir, are singing and Mimi’s movements are completely in sync with the song’s rhythm.

After the turn, Mimi has caught up with Maaya, who, angry and frustrated, barely manages not getting overtaken by Mimi. Both finish at the same time, but after the start of the next two participants, Sanae and Mayo, Umishou loses the lead as Sanae realizes she cannot keep up with Mayo. Makio comments the effect of Tamatsuka’s Synchronized Medley relay Melody Swimming technique (S.M.M.S.), as she calls it, is tremendous. Ikamasa reacts that they should start singing as well and he starts singing about his family restaurant. Amuro and Makio join in, each with a different song. Meanwhile, Mirei starts worrying about being next and possibly letting the team down, but Maaya manages to calm her. When it is her time to start, Tamatsuka’s Ai has a 2 second lead over her, but at the turn an all fired up Mirei manages to close the gap. Next up are Momoko and Nagi. Momoko loses some time due to a bad start and although she is trying to catch up, she notices something is wrong with her right leg. By now Ikamasa, Makio and Amuro have finished their songs and Ikamasa starts the Onoshima dance song. Singing, he moves towards Tamatsuka’s choir, followed by Amuro, Makio, Takeda and Kaname. Due to them approaching and Ikamasa’s appearance (something is starting to show itself), one by one, shocked members of Tamatsuka’s choir start losing their concentration, disrupting the rhythm. When he manages to lose his pants, the Tamatsuka students start fainting. Seeing Nagi is hindered by the choir’s demise, Momoko pushes for the win, despite her aching leg. After a close finish it turns out Umishou won, but their celebrations are cut short when they realize Momoko has lost consciousness.

Later, Momoko comes to in the infirmary, where her fellow club members are taking care of her. Kaname explains she got cramp in her leg. When she is worried about the race’s result, Kaname tells her Umishou got first and is through to the finals and Ikamasa tells her they supported her with the Onoshima song, confusing her. There is some bad news, though. The local doctor, Ganaha, shows up and tells Momoko she will not be able to participate in the medley relay finals. Momoko insists on participating, not wanting to let the others down. While she argues with Ganaha, Maaya and Sanae, Kaname thinks of a solution: they are allowed to have up to four people as reserves in case someone on the relay team gets hurt. Makio and Ikamasa both volunteer to replace Momoko, but since one cannot swim and the other is clearly not a girl, even in a swimsuit with some melons put underneath, Kaname does not see them as good options. Instead he tells Amuro that she is the only one that can replace Momoko. The others agree and promise to give it their all for Momoko.

Points of Interest

  • The eyecatch does not appear to be based on a frame from the manga.
  • Like in episode 8, Amuro shows up with bananas for a troubled Momoko, claiming eating some will make her feel better.

Manga & Anime Differences

  • This (and the final) episode shows some major changes with the manga. The anime basically combines elements of the manga’s Kantou tournament arc and the Inter-high tournament arc.
  • The anime shows two 100 m freestyle races, one won by Amuro and one won by Momoko. Amuro’s is the preliminary race and Momoko’s is most likely the finals. Neither race shows any other (named) opponents than the winners. The manga only shows the finals with Amuro winning, Momoko in 2 and Karena in 3 place.
  • The episode starts on the second day of the Kantou tournament and in the anime that day begins with 100 m freestyle races, followed by the medley relay. In the manga the second day starts with the medley relay. The 100 m freestyle race is on the third and final day.
  • In the anime Amuro reminds Kaname of their promise, which is anime-only, just like Takeda’s fantasies about Mirei.
  • In the anime Momoko starts to have problems with her leg during the medley relay. She finishes the race, securing Umishou’s victory, before it gets really serious. In the manga, Momoko’s leg problems happen during the 100 m freestyle race at Inter-high and she is unable to finish the race.
  • In the anime, this leads to Momoko dropping out and having to be replaced for the medley relay finals at the Kantou tournament. In the manga she has to be replaced for the medley relay preliminaries at the Inter-high tournament.
  • In the manga, after doctor Ganaha tells Momoko she cannot swim anymore during the tournament, Makio and Maaya attack him. They do not in the anime. Instead, Maaya gets angry when Momoko wants to participate in the medley relay anyway, despite the risks.
  • In the manga Momoko realizes she cannot compete anymore in the tournament, but in the anime she wants to ignore the doctor’s advice.
  • The anime shows none of Kaname’s relationship problems from the manga, when they are deciding how to deal with Momoko being forced to drop out of the tournament. This is logical, since most of the causes for them happened in the Daito island arc just before the Inter-high arc.
  • In the anime, after Makio suggests she could replace Momoko, Ikamasa crossdresses. Then Kaname suggests Amuro should replace Momoko. In the manga, Kaname suggests Amuro as Momoko’s replacement right after Makio wants to replace her. Ikamasa crossdresses as a replacement after Kaname’s relationship problems.
  • In the manga, the decision of Amuro replacing Momoko is made outside of her room, without her knowledge; Momoko does not know it until the start of the medley relay. In the anime, the decision is made in Momoko’s room.
  • In the anime only Ikamasa crossdresses, wanting to help the girls in the medley relay. In the manga he is joined by the doctor.

Characters & Voice Actors

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Nagi Shindō ( x ) ( x ) ( x )
Yū Kobayashi ( x ) ( x ) ( x ) (Japanese)
Chigusa Yasu ( x ) ( x ) ( x )
Yuka Iguchi ( x ) ( x ) ( x ) (Japanese)
Yamana Yoshizawa ( x ) ( x ) ( x )
Kaori Himekawa ( x ) ( x ) ( x )
Amuro Ninagawa ( x ) ( x ) ( x )
Aki Toyosaki ( x ) ( x ) ( x ) (Japanese)
Okiura Kaname ( x ) ( x ) ( x )
Toshiyuki Toyonaga ( x ) ( x ) ( x ) (Japanese)
Momoko Orizuka ( x ) ( x ) ( x )
Hitomi Nabatame ( x ) ( x ) ( x ) (Japanese)
Mirei Shizuoka ( x ) ( x ) ( x )
Yukari Fukui ( x ) ( x ) ( x ) (Japanese)
Sanae Kise ( x ) ( x ) ( x )
Ryoko Shintani ( x ) ( x ) ( x ) (Japanese)
Maaya Nanako ( x ) ( x ) ( x )
Sayuri Yahagi ( x ) ( x ) ( x ) (Japanese)
Maki Ikuta ( x ) ( x ) ( x )
Ai Shimizu ( x ) ( x ) ( x ) (Japanese)
Masa Ikariya ( x ) ( x ) ( x )
Makoto Yasumura ( x ) ( x ) ( x ) (Japanese)
Takeda Seito ( x ) ( x ) ( x )
Satomi Kōrogi ( x ) ( x ) ( x ) (Japanese)
Keiko Nakamura ( x ) ( x ) ( x )
Miki Ootani ( x ) ( x ) ( x ) (Japanese)


Add a credit to Oma Oma ~. (No voice actors. Add voice actors to characters above.)
Mitsuru Hattori Original Concept Mitsuru Hattori is the artist and writer of the Kenko Zenrakei Suieibu Umisho manga series.


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