[[caption-width-right:279:This is just how it begins...]]

Released in 1994 for Super Famicom, ''Umihara Kawase'' features the eponymous girl and her fish hook trying to reach doors in increasingly difficult fields while avoiding fish walking around. Yes, [[Manga/{{Gyo}} fish walking around]]. It can be beaten in less than ten minutes, but there's dozens of different ways to reach the ending credits, and impossible to see all of the fields in one playthrough. Plus some doors take a lot of knowledge about the game physics to reach.

A sequel, ''Umihara Kawase Shun'' (Shun meaning something being in season - in the English translation of the 3DS game, it's given the name ''Umihara Kawase Seasonal''), was released for [=PlayStation=] three years later. It had fields that required [[UpToEleven even more intricate tricks with the hook]], a shorter and springier line and... commercials. Yes, there were actually commercials inbetween some fields, from a company producing [[ProductPlacement fishing supplies]]. In 2000, ''[[UpdatedRerelease Umihara Kawase Shun Second Edition]]'' was released. It contained five new fields and some bugfixes, but most importantly, it replaced the commercials with artwork of Umihara.

Following that, the series stayed quiet for eight years, until ''Umihara Kawase Portable'', a port of ''Shun'', was released for the [=PSP=] in 2008. While at first welcomed, upon release it was found a huge disappointment due being [[PortingDisaster riddled with bugs]], and due to a change in physics but the fields staying the same some doors were rendered [[GameBreakingBug impossible to reach]]. This had to do with the port being developed by a different studio altogether, and was so bad that a boycott was called.

Fans did not have to be without their portable fix, however - in 2009, ''[[LongTitle Umihara Kawase Shun Second Edition Kanzenban]]'' (kanzenban meaning "complete version") was released for the Nintendo [=DS=]. Not only was it a [[PolishedPort far better port]], it also included the original game and had some extra fields. This port was overseen by the original programmer of the game, and the original artist contributed with new artwork. It has been recieved with great praise.

A brand new game in the series for the 3DS was released in 2013, titled ''Sayonara Umihara Kawase'' appearing on the American eShop in March 2014 as "Yumi's Odd Odyssey", the first game to leave Japan. It was released on the European eShop as well, but under its original title, in April 2014. It was released again for the Playstation Vita in April 2015, with a few changes from the 3DS version of the game. All three games were also released on Steam in 2015.

There is also a manga, but it does not seem to have very much to do with the game.

!!The games provide examples of:

* AntiClimax: Alright, the game has no story whatsoever, but there is ''nothing'' that even remotely hints that you are close to the end of the game. You merely enter a door, identical to every other door in the game, and the credits start rolling. A little less so in ''Sayonara'', as every ending field is also a boss field.
* BuxomIsBetter: Umihara's character art in most of the games, though [[GraphicsInducedSuperDeformed nowhere seen in-game]]
** In the GameCenterCX episode centered around the SNES game, the character designer himself gives Arino an illustration of Umihara cheering Arino on. Arino's reaction to the illustration upon further examination has him asking if she actually has that large a bustline.
* DubNameChange: The American release of ''Sayonara'' is named ''Yumi's Odd Odyssey'', with Umihara subsequently renamed Yumi.
* EpunymousTitle: The name of the game and its protagonist is the abbreviated form of a Japanese proverb, "Umi no sakana wa hara ni, kawa no sakana wa se ni abura ga notteiru." [[labelnote:Translation]]"Sea fishes are fat in the belly, river fishes are fat in the back."[[/labelnote]]
* ExcusePlot: The reason she goes around facing down walking fish? She's a traveling sushi chef gathering ingredients. This seems to only appear in the American translation, however.
* GiantEnemyCrab: Field 56 (SFC). Slightly smaller but still giant in relation to the human characters crabs appear as bosses in ''Sayonara'' too, and this time you drop persimmons on them.
* GrapplingHookPistol: Well, not a pistol. Just a rubber line and fishing hook.
* {{Hammerspace}}: As mentioned above, her backpack.
* InterfaceScrew: The HUD itself, situating itself pretty much right in the middle of the screen. While it's not ''totally'' obtrusive, it can prove to be a bit distracting at times. The only game in the series that spreads the HUD out closer to the borders of the screen is Umihara Kawase Portable, but, uh... [[PortingDisaster yeah]]. ''Sayonara'' also keeps the HUD at the edges and lets you select what elements of it you even want appearing.
* MixAndMatchCritters: Fish with legs.
* MookMaker: The buckets. To a lesser extent, the sharks.
* NintendoHard: This game has a learning curve. It's ''very'' sharp. ''Shun'' is even less forgiving. Also, you start with ten lives.
* NoPlotNoProblem: There's no explanation for anything. The manga doesn't seem to make sense out of anything either.
* OlderThanTheyLook: Upon first seeing her SFC sprite, one would probably assume Umihara is still in her single digits. Her ''Shun'' sprite makes her look a little older, though not by much. She's actually ''nineteen'' - in ''Sayonara'', she's become 20, and looks more her age.
* OneHitpointWonder: Most enemies kill Umihara at the slightest touch. Good thing there's...
* OneUp: In the form of Umihara's pink backpack. In ''Sayonara'', the backpacks become collectibles that you unlock things by collecting, but acts as one-ups in Survival mode.
* PlatformGame
* RecurringBoss: A giant tadpole that lays eggs that hatch into tiny frogs appear at least twice in each game, ''Shun'' even having one field where there's [[DualBoss two of them]]. Fighting them is somewhat different in each, in the original you have to avoid things until it jumps into the sea, in ''Shun'' you can exit the boss fields if you manage to reach the door and in ''Sayonara'' you have to cause damage to it. ''Sayonara'' is the only game where you can't face it twice in the same playthrough, as every boss field is an ending field.
* RespawningEnemies: Nearly everything, except for the octopuses and bosses. ''Sayonara'' mostly lets enemies stay dead.
* RodandReelRepurposed: While the title character's fishing rod can catch the curiously terrestrial fish, it can also be thrown to cling to platforms like a GrapplingHookPistol.
* SpikesOfDoom
* SpritePolygonMix: ''Shun'' has the stages built out of polygons while everything else are sprites.
* SquashedFlat: Can happen in the original SNES game and the Playstation Vita version of Sayonara Umihara Kawase if Umihara (or any of the other characters in the Vita game) is standing on a moving platform while it moves into a ceiling.
* TimedMission: Every field has a time limit. There's also a global timer, and the longer you play the game, the more likely is it that you will reach an ending field. Field 28 (again, [=SFC=]) is only possible to reach this way, after having played for 30 minutes.
** A number of bosses are also like this, as all you can do is dodge until the exit door becomes available.
** ''Sayonara'' has a regular field where you avoid/fight regular respawning fish enemies until the door appears, a rare appearance of a non-boss field with that kind of time limit.
* UnmovingPlaid: The moving blocks in ''Shun'' are like this.
* WakeUpCallBoss: The tadpole from the original SFC game is ''literally'' unbeatable unless you have a good enough grasp of the physics and game mechanics to realize [[spoiler: you can hang safely underneath the platform the battle takes place on, then pull yourself back up once it's safe]], and the skills to actually execute this. Each boss in ''Sayonara'' can be this is you're used to the bosses from the previous games, as you have to actively cause damage.
* YouGottaHaveBlueHair: Umihara is depicted like this in the [[http://kawasefan.net/images/umihara-kawase-manga-cover.png manga]].