History ComicBook / NinjaHighSchool

The series has been uploaded to ''Website/{{Webtoon}}'', including both the original run, Volume 2, ''Shidoshi'', ''Quagmire USA'' and ''Volume 3'' (Though no ''Hawaii'' series for some reason) as well as some of the crossovers with ''ComicBook/GoldDigger''. You can [[https://www.webtoons.com/en/challenge/ninja-high-school-/list?title_no=343291 Read it here]] and here's a checklist for the links to certain parts of the series.

* AttentionDeficitOohshiny: Akaru, Jeremy managed to use it as a weakness during their first meeting.

* BleachedUnderpants: Dunn also wrote a satirical adult series entitled ''NOT Ninja High School'', at the same time as the original. (Other writers and artists have continued releasing sequels.)

The series contains {{Lawyer Friendly Cameo}}s and {{Captain Ersatz}}es of characters from other media, usually but not always Japanese; these included ''Franchise/KamenRider'', ''Franchise/PowerRangers[=/=]Franchise/SuperSentai'', ''Franchise/HarryPotter'', ''Franchise/{{Superman}}'', ''Franchise/ThePowerpuffGirls'', ''Franchise/{{Terminator}}'', ''VideoGame/NinjaGaiden'', ''Franchise/{{Transformers}}'', ''Anime/NadiaTheSecretOfBlueWater'', ''Manga/UruseiYatsura'' the ''Franchise/{{Gundam}}'' series and ''especially'' ''Manga/RanmaOneHalf'' (seriously looking at the early chapters, you'd be forgiven for thinking this whole series was an out and out parody of it).

** One description of the artist's works, and characters. If it's in Ninja High School, it's [[IncrediblyLamePun Ben Dunn]].

* GentleGiant: Arnie

* FurryFandom: The Salusians, being anthropomorphic skunks, are very popular amongst some furries. In fact, the series is so popular with them as to result in the parody mini-series "Furry (Not!) Ninja High School" and its successor "Furry Ninja High School Strikes Back", which reinvisions the entire series through a lens of a world of various anthropomorphic characters, with some accordant tweaks. For example, Asrial in this universe is an alien anthro skunkwoman who can [[VoluntaryShapeshifting transform into a non-anthro Earth skunk]], which she uses for stealth purposes (and to take advantage of its noxious musk spray).

* BroughtDownToBadass: [[spoiler:CatFolk superhero Tygarr loses the BalefulPolymorph curse that grants him his superpowers right when Yuudai conquers Quagmire. Despite this, he proves to be a BadassNormal and continues to fight against the insane ninja tyrant, behavior that causes Heidi Yfory to fall in love with him over the eight years they spend trapped in Quagmire together.]]

** Tygarr, a teen superhero introduced in the Volume 2 issue "VR Bloopers", is a once-normal boy named Steve Gloss, who was [[BalefulPolymorph transformed into a humanoid tiger]] by a vengeful god for tormenting the tigers at a local zoo. His only hope to become human is by completing 1,000 good deeds. [[spoiler:Which becomes problematic when he completes his 1000th deed and is restored to normal during the events of the Shidoshi continuity, right when his powers would come in handy.]]

The series contains {{Lawyer Friendly Cameo}}s and {{Captain Ersatz}}es of characters from other media, usually but not always Japanese; these included ''Franchise/KamenRider'', ''Franchise/PowerRangers[=/=]Franchise/SuperSentai'', ''Franchise/HarryPotter'', ''Franchise/{{Superman}}'', ''WesternAnimation/ThePowerpuffGirls'', ''Franchise/{{Terminator}}'', ''VideoGame/NinjaGaiden'', ''Franchise/{{Transformers}}'', ''Anime/NadiaTheSecretOfBlueWater'', ''Manga/UruseiYatsura'' the ''Franchise/{{Gundam}}'' series and ''especially'' ''Manga/RanmaOneHalf'' (seriously looking at the early chapters, you'd be forgiven for thinking this whole series was an out and out parody of it).

* MundaneUtility: Ninja skills apparently can make any household task easier. Taken UpToEleven by Ichi's father - apparently, the ''only'' thing he ever used his ninja skills for was to show off for others. The few shots of him using any remotely ninja-like skill are generally implied to be him entertaining at parties.

* {{Loads and Loads of Characters}}: Mostly due to all the expies running around.

%%* PutOnABus: Inevitable in a series featuring Loads And Loads Of Characters.

The story centers on [[UnluckyEverydude Jeremy Feeple]], [[OrdinaryHighSchoolStudent a student at Quagmire High]], who soon encounters a beautiful female [[{{NINJA}} ninja]] named Itchy Koo (real name Ichikun Ichinohei) and an AlienPrincess named Asrial -- [[ArrangedMarriage who have both been ordered to marry him]]. The earlier stories focus on [[UnwantedHarem the girls' comedic attempts to marry this seemingly plain, ordinary high school boy]]. As the story progressed, backstories were given to the core characters, and [[LoadsAndLoadsOfCharacters an extensive supporting cast]] developed. While early stories focused mainly on slapstick, [[CerebusSyndrome later story arcs have become more serious]], delving into [[WhatDoYouMeanItsNotForKids murder]], {{drugs|AreBad}}, and [[ArsonMurderAndJaywalking homosexuality]].

* PutOnABus: Inevitable in a series featuring LoadsAndLoadsOfCharacters.

* ArrangedMarriage: The reason that Asrial and Ichi were initially after Jeremy.

The story centers on [[UnluckyEverydude Jeremy Feeple]], [[OrdinaryHighSchoolStudent a student at Quagmire High]], who soon encounters a beautiful female [[{{NINJA}} ninja]] named Itchy Koo (real name Ichikun Ichinohei) and an alien princess named Asrial -- [[ArrangedMarriage who have both been ordered to marry him]]. The earlier stories focus on [[UnwantedHarem the girls' comedic attempts to marry this seemingly plain, ordinary high school boy]]. As the story progressed, backstories were given to the core characters, and [[LoadsAndLoadsOfCharacters an extensive supporting cast]] developed. While early stories focused mainly on slapstick, [[CerebusSyndrome later story arcs have become more serious]], delving into [[WhatDoYouMeanItsNotForKids murder]], {{drugs|AreBad}}, and [[ArsonMurderAndJaywalking homosexuality]].

The series has been uploaded to ''Website/{{Webtoons}}'', including both the original run, Volume 2, ''Shidoshi'', ''Quagmire USA'' and ''Volume 3'' (Though no ''Hawaii'' series for some reason) as well as some of the crossovers with ''ComicBook/GoldDigger''. You can [[https://www.webtoons.com/en/challenge/ninja-high-school-/list?title_no=343291 Read it here]] and here's a checklist for the links to certain parts of the series.

* {{Cat Girl}}: Has a few, the most notable being Meppy, a DrillSergeantNasty -like gym and health teacher, who fought Nazis during World War II.

* AlternateUniverse: Vol 3 is looking to be set here using a cast of all new characters.

* BeastMan: Salusians' natural form is probably best described as "anthropomorphic skunk." Their muzzle is less pronounced than an actual skunk's muzzle, and they have hands and platigrade feet, but they otherwise greatly resemble human-sized striped skunks.

** Shidoshi Arc: [[spoiler: Yuudai dies without having his final battle with Ricky who informs him the original Red Ninja whom Yuudai original fought against is still alive. Though Ricky at the least gives him an honorable funeral. Ricky's group take on the Elder Stars and have to settle for just bankrupting them then defeating them in combat, though do get the victory of not allowing them to claim the Red Ninja title (long story short, a lot of family complications as Anna is still technically part of the ninja clan the Elder Stars come from and by right still holds the title. Since she's in another world, that title lands on Ricky and the Stars have to defeat him to reclaim it regardless if the Elder Stars don't consider them a true ninja clan). Tetsuo can't marry his true love, Nanashi, due to a arrange marriage he couldn't get out of. So he puts on a facade of going back to his overly ambitious ways to chase her off. However we see he still pines for her despite having everything he wants, but is content that she's safe, sets up a bank account for her to use in three months and ultimately erasing all traces of her so the Elder Stars can't go after her anymore. After some time passes and the protagonists have grown up, Ricky finds the original Red Ninja and engages in combat with him to both dismantle the Elder Stars and their corrupt ninja governing, as well as defeat him on Yuudai's behalf. The story ending just as they rush each other.]]

* CaptainErsatz: Oh so many, is it any wonder this and Gold Digger get along so well?

* {{Cerebus Syndrome}}: Started off as a fairly slapstick action adventure series. Then later story arcs got much more serious. The Ricky Feeple era is especially notable for this.

* DisappearedDad: Jeremy's, subverted as he finds out his dad is {{Trapped In Another World}}, a mouse based one, highly ironic in that Mr. Feeple's profession is a ''rat exterminator''. What's more, he is now the ''king'' of the land and can't return to the human one as the mouse people don't have the technology to do so without fatal side effects.

* FriendlyNeighborhoodVampire

* MorphicResonance: This is a noted flaw in the Salusian species-altering technology; a creature transformed into a different creature will always have some trait carried over that makes their base species easier to guess. This is why Asrial's human form still has Salusian ears atop her head, as well as a second set of human ears in the normal place. [[spoiler: When humans are turned into Salusians by the same technology, they lack tails.]]

* RelationshipRevolvingDoor: Initially, Jeremy is seemingly destined to ultimately hook up with Ichi-kun, with the group even meeting a time-traveling child of theirs. But Jeremy ultimately decides to almost literally ScrewDestiny and marries Asrial instead, resulting in that timeline being erased as he instead fathers three half-Salusian children instead.

** Unfortunately, [[spoiler: for Tetsuo, at least, ]]it didn't take.

* RoyalBrat: Asrial and her sister Andromeda, though not all that bad they have an annoying habit of letting everyone know it when they get the chance.

** At one point in the original series, Jeremy encounters a time-traveling child of his and Ichi-kun's, who states it's his destiny to marry the ninja. Instead, he chooses Asrial the alien.

* SmellySkunk: Subverted with the Salusians, who despite looking like [[BeastMan humanoid skunks]] have no musk glands. They compensate with SuperStrength instead -- at least, their rulers do.
* StartOfDarkness: Yuudai during the Shidoshi era.