[[quoteright:300:http://static.tvtropes.org/pmwiki/pub/images/Ziraiya_6535.jpg]]

'''''Sekai Ninja Sen Jiraiya''''' ("Jiraiya: War of the World Ninjas"), also known as ''Ninja Olympiad'', is the seventh ''Franchise/MetalHeroes'' series.

Rather than being a RidiculouslyHumanRobot or a man in a PowerArmor, Jiraiya (real name:Tōha Yamaji) is an elite ninja warrior from the Togakure style of Ninpō. His mentor and foster father Tetsuzan Yamaji, the 34th Grandmaster of the Togakure School, has trained him for the day the ancient Yōma Clan will return. Sure enough, the clan, led by Oninin Dokusai, arise with their army of evildoers in order to seize [[MacGuffin Pako]], a mysterious treasure which came from outer space over 2000 years ago which is said to have power equiparable to the Sun. With the help of his family, and an army of international ninja heroes, Jiraiya must stand tall against the evil ones.
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!!''Sekai Ninja Sen Jiraiya'' features examples of the following tropes:

* ActionGirl: Emiha, Reiha and Yumeha, who even form a PowerTrio in episode 32. Benikiba is a DarkActionGirl.
* AmbiguouslyBrown: Rainin Wild, who was played by a black American in-costume in his debut episode, but was replaced by a tanned Japanese man in subsequent appearances.
* AmericansAreCowboys: Rainin Wild, who is Billy the Kid's descendant.
* BadassBiker: Mafūba
* BackFromTheDead / AscendToAHigherPlaneOfExistence: [[spoiler: Kensuke Onimura and Kazumi Mimura]]
* BladeOnAStick: Jiraishin Windmill Lance.
* BreakTheHaughty: Jiraiya in Episode 3, but came back in same episode.
* CaptainEthnic: Some of the various World Ninjas (at least, the ones who are {{McNinja}}s).
* CoolCar: Jiraiya's main vehicle, the Black Saber, is a black [=Z31-model Nissan 300ZX=]
* ClothesMakeTheSuperman: Played around in an episode where a rival warrior named Yajiro Iyo (played by Kenji Oba) takes the Jiraiya suit away from Toha after defeating him. Toha is forced to fight Iyo without his suit to get it back.
* DeceptiveDisciple: Kuroi Ibara in Episode 30 betrayed his master's teaching in order to become a criminal.
* DefeatMeansFriendship: Many of the World Ninjas when they first fight Jiraiya.
* DepartmentOfRedundancyDepartment: The title of Episode 6 is "Nazo no Nazo wa Nazonazo?!", which roughly translates to "The Mysterious Mystery is Mysteriously Mysterious?!"
* DistaffCounterpart: Tōha's foster sister, Kei, has her own heroic alter-ego under the guise of Himenin Emiha, who wears white armor, lets her hair hang loose beneath the helmet, and [[ShowSomeLeg has her legs showing]].
* TheFaceless: Dokusai [[spoiler:-- literally.]]
* FlyingFace: One of attacks from Demost.
* GirlsNightOutEpisode: Episode 32
* GratuitousEnglish: Jōnin Baron Owl, Bakunin Rocket Man and Rainin Wild. Practically any character who is supposed to be American or English.
* HeelFaceTurn [[spoiler: Baron Owl, Haburamu, Kinin Reiha, Yanin Spiker, Vermillion Tokage, Ninja Wild, Ninja Mafuuba, Kaminin Oruha, Rocket Man, Oruha, Alamsa, Agnes, Special Ninja Team]]
* HighlyVisibleNinja: Even without accounting Jiraiya's bright red armor, Dokusai's son and [[TheDragon Dragon]] Retsukiba wears a quite unbelievable striped, magenta-and-black ninja suit.
* HumanAlien: [[spoiler:Toha and Reiha are descendants of the original Jiraya, an alien warrior who arrived on Earth thousands of years ago.]]
* HumongousMecha: Jiraishin, which makes its debut in Episode 34-35.
* ImprobableAimingSkills: Wild's bullets can make ''curves'' in the air.
* InTheNameOfTheMoon: "''Togakure-ryū Seitō, Jiraiya!''" ("Disciple of the Togakure school, Jiraiya!")
* KickTheDog: Chan Kung-Fu the Fire Ninja does this literally in Episode 4.
* KilledOffForReal: Genchi Koshimura, Ninja Jane.
* LegacyCharacter: Chan Kung-Fu, Makumba, Gyuma and Gamesh are all replaced by identically-dressed successors. Chan's and Makumba's successors in particular are their son and older brother respectively.
* LighterAndSofter: Compared to its immediate predecessor ''Series/ChoujinkiMetalder''.
* McNinja: Most of the World Ninjas.
* MonsterOfTheWeek: The World Ninjas start off like this, but quite a few of them end up becoming recurring characters and not all of them are villains.
* {{Ninja}}
* NinjaPirateZombieRobot
** Demost is an alien ninja.
** [[spoiler:It is eventually revealed that Toha and Rei also descend from the aliens that brought Pako to Earth.]]
** Also, there's Gamesh, a cyborg ninja.
* PutOnABus: Toppa leaves Japan after Episode 24 for an overseas assignment.
* RedemptionEqualsDeath: Ninja Jane.
* SpiritualSuccessor: Loosely based on ''Manga/KamenNoNinjaAkakage'', but set in [[SettingUpdate modern times]].
* ThemeMusicPowerUp: Pretty frequent.
* ThisIsUnforgivable: Basically, this is Jiraiya's CatchPhrase.
* TransformationSequence: Mostly averted. If Toha has to don the armor during the fight, the scene will do a quick cut between him and Jiraiya (one particularly funny case is in episode 30, when Benikiba is fighting Toha; she first pushes him offscreen, and he comes back onscreen less than a second later in the Jiraiya armor). In cases it is shown, it's only a brief sequence.
* WhatHappenedToTheMouse: [[spoiler: Benikiba and Retsukiba drop out fighting after Emiha and Manabu have discovered their trick of hiding, leaving his swords and running]].
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