Light Novel / Masou Gakuen HXH

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Trust us, the light novel covers are raunchier than this... From top right, clockwise: 

Masou Gakuen HxH, a.k.a. Hybrid x Heart Magias Academy Ataraxia, is a Light Novel written by Masamune Kuji and illustrated by Hisasi.

The series is set 20 Minutes into the Future. Humanity has been attacked and almost wiped out by giant magitech mechas from another universe, which appear through portals on landmasses above a certain size. The only known survivors live on floating structures called Mega Floats. Humanity's only defense against the invaders are personalized superweapons called Heart Hybrid Gears (HHGs). The story follows Kizuna Hida, a high school student who possesses the Heart Hybrid Gear Eros. His HHG gives him the power to recharge other HHG users' power levels by doing lewd things with them...much to his chagrin when he finds out.

An anime adaptation has been created as part of the Summer 2016 anime season.

This series contains examples of:

  • Adaptational Early Appearance: In the light novels, Momo Kurumizawa of the Engineering Division is only introduced in Volume 5, yet she makes several small appearances in the anime, which adapts the first 4 volumes.
  • Aerith and Bob: The Batlantis Empire has names like Grabel, Aldea, Zelshione, Ragrus… and Grace.
  • Alliterative Name: Hayuru Himekawa and Sylvia Silkcut.
  • All Your Powers Combined: The end result of Eros' Power Copying ability, which he uses to completely overwhelm his opponents, and the anime fully realizes this when he uses the powers of all four female members of Amaterasu together against Zelshione and her forces.
  • Attack Drone: Hayuru's Hybrid Gear has the unimaginatively named "Blades," which fly around and slice opponents to pieces.
    • Aldea's Magitech Armor, Zeeru, also have these. They can act as protective shields or transform into a spear.
  • Badass Adorable: Sylvia, once she gets her own Heart Hybrid Gear.
  • Bathtub Bonding: Enforced by Kizuna in an attempt to get Yurishia and Scarlet to admit how they really feel about each other and hopefully fix their broken friendship. At the very least it did put them in the right direction.
  • Beam Spam: Yurishia's Hybrid Gear Cross/Kuros can deliver these.
  • Beehive Barrier: Comes standard with Hybrid Gears.
  • BFG: Aine's Zeros can gain access to "Pulverizer," which functions as a man-portable Wave Motion Gun. Yurishia also unlocks her own BFG later on, called "Cross Head."
  • BFS: Hayuru's Neros has the "Gladius", which is powerful enough to kill a three-headed magitech dragon in one slash.
  • Cast from Hit Points: All Hybrid Gears work off the wearer's life energy, but the "-ros" series can actually kill the user if its power runs out.
  • City on the Water: The Mega Floats, which are technically a conglomeration of floating cities that house the remaining survivors of the invaders' initial attacks. Being a floating city also serves a defensive purpose, as the inter-dimensional gates (or "Entrances") that the aforementioned invaders come from can only appear on solid landmasses (at least the size of a large island) and not over water.
  • Clothing Damage: The female members of the Amaterasu Team endure these whenever they take a beating from the invaders when their Hybrid Count is dangerously low. This trope is also prominent in some of the light novels' cover art.
  • Curb-Stomp Battle: The only way to describe Grabel's first battle against Amaterasu and Masters. They couldn't even scratch her.
    • Whenever Kizuna is able to go all-out using Eros' full power, returning the favor to Grabel and completely turning the tables against Zelshione until his power fails when his chest piece breaks. Thankfully, Aine is able to step in with her own special ability to take out Zelshione and the entire Batlantis force with Code Breaker.
  • Dark-Skinned Blond: Gravel/Grabel is one.
  • Deus Sex Machina: Kizuna and his Eros Hybrid Gear can perform the normal "Heart Hybrid" and the more intense "Climax Hybrid" with Aine, Hayuru or Yurishia. Heart Hybrid restores Hybrid Count, while Climax Hybrid allows access to a Super Mode. Taken to high levels of Refuge in Audacity with the "Connective Hybrid." Eventually bypassed altogether with The Power of Love in the anime adaptation, implying the sexual activity is merely a stepping stone to it.
  • Discount Lesbians: Maybe. It's sorta vague since Grabel and Aldea are apparently human but are from another world. Regardless, they're definitely lovers.
    • Played with in that Vatlantis is populated solely by women. Therefore every couple would be a lesbian one. That said, many of the characters are also attracted to Kizuna, meaning they are at least bisexual.
      • The above makes sense in context with the whole "planet of women" thing, as gender is not something most of them are even conscious of. They aren't attracted to Kizuna because of or in spite of his maleness, but because he's The Messiah to both worlds by the end.
  • Elaborate University High: The Strategic Defense Academy Ataraxia, which doubles as a Military Academy, research center and the Japan Mega Float's first line of defense against the invaders.
  • The Empire: The Batlantis/Vatlantis Empire, better known as the invaders from another universe. Aldea implies that their empire spans half of the world in their dimension.
  • Everyone Has Standards: Grabel is utterly ruthless when fighting, but even she thinks that completely slaughtering the enemy, civilians included, is crossing the line.
  • Evolving Credits: As new characters are introduced, the opening changes to include them.
  • Expy: Yurishia is one to Excellen Browning.
  • Foreshadowing: During the anime-only School Festival episode, Hayuru, Yurishia and Silvia present themselves as “school idols for a day”, foreshadowing they becoming an actual Idol Singer group in the later volumes of the novel… in the Batlantis Empire.
  • Homosexual Reproduction: The One-Gender Race from the AU reproduce by offering the blood of two women to the Genesis pillar, which then creates a child. This process only gives birth to females.
  • Hot Springs Episode: The Special Short Story of Volume 9.
  • The Immodest Orgasm: This usually happens to Aine, Hayuru or Yurishia after a successful Heart Hybrid or Climax Hybrid.
  • In Medias Res: The series begins with Amaterasu in the middle of a big battle before going back to the beginning of the plot. Turns out that the battle scene was actually the climax of volume 4/Episode 11.
  • Instant Awesome, Just Add Dragons: The Dragories. They are Category-A magitech weapons that usually serve as Elite Mooks.
    • Taken Up to Eleven with the three-headed variant (later given the code name "Tri-Head" and put on a "Super" category). One of these caused Hayuru's greatest failure.
  • Katanas Are Just Better: Hayuru's Neros is equipped with one. Fitting, as she's the Japanese ace.
  • Life Energy: Implied to be what powers the Heart Hybrid Gears. The Batlantis/Vatlantis Empire also drains life energy from the remaining human populations within occupied zones such as Tokyo, apparently to power their own magic energy needs.
  • Magitek: The Heart Hybrid Gear technology, which also doubles as Powered Armor. It's implied to run on the user's Life Energy (a.k.a. Hybrid Count). When it reaches dangerously low levels, the armor disappears. And for the "-ros" series, once the Hybrid Count reaches zero, the user dies. So far, only Kizuna has the ability to replenish the Hybrid Count of his Battle Harem... by doing indecent acts with them or in the anime, through The Power of Love.
    • The weapons used by the invaders from another universe are also this, and the term itself is used by the English sub for the anime.
  • Mecha-Mooks: Most of the magitech weaponry fielded by the invaders are this.
  • Mini-Mecha: Sylvia's Heart Hybrid Gear—Taros—can be considered as one. Ditto for Ragrus's Magitech Armor called Demon.
  • Mundane Utility: For a given value of “mundane”. The simulation technology used in the “Love Room” was originally developed for combat training, but instead it was used to simulate romantic scenarios to help in the Heart Hybrid sessions.
  • My Greatest Failure: During the second invasion, Hayuru was escorting refugees bound for the Tokyo Mega Float when the magitech weapon "Tri-Head" attacked. The attack knocked Hayuru unconscious and caused the deaths of a lot of refugees, including a little girl that Hayuru sworn to protect.
  • Mysterious Past: Aine Chidorigafuchi, who had no memory of her past and was later taken in by Dr. Nayuta Hida as a test subject for the Hybrid Gear technology. The end of Volume 1 implies that she came from the same dimension as the invaders.
    • At the end of volume 4, her true identity is revealed to be Aines Sinclavia, Princess of the Batlantis Empire... And she has a sister.
  • Nipple and Dimed: The light novel illustrations never show the nipples of the girls. The anime, however, does show them in the uncensored TV broadcast and the Blu-ray/DVD version.
  • One-Gender Race: The human race that lives in the AU is composed entirely by women, who are able to perform Homosexual Reproduction. At the end of volume 7, Reiri theorizes that because the people from Atlantis valued magic power above everything else, they prioritized the method of reproduction that created females only, since males have less magic power. This led to the extinction of men in that world.
  • One-Woman Army: Gravel/Grabel, with a dose of Asskicking Equals Authority for good measure.
  • Phenotype Stereotype: Yurishia Farandole, the American Hybrid Gear ace.
  • Potty Emergency: Aine has one in Episode 12. But thanks to Kizuna, she doesn't make it...
  • Power Copying: The Eros can use the normal abilities of a Hybrid Gear after Kizuna helps its wearer achieve a Climax Hybrid.
  • Powered Armor: Again, the Hybrid Gears.
  • The Power of Love: Partly involved in the Deus Sex Machina. Taken to its ultimate conclusion towards the end of the anime adaptation, when Kizuna draws on the power of his companions through sheer love and affection for each other, allowing him to go all-out against Zelshione and beat her down.
  • Public Domain Soundtrack: The Nocturne in E-flat major by Fryderyk Chopin is heard at various points in the anime.
  • Sequel Hook: The finale of the anime adaptation ends on a cliffhanger. According to Masamune Huji, a second season of the anime is possible, depending on how the DVD and Blu-Ray sales would turn out.
  • Sexy Discretion Shot: Downplayed, since actual sex wasn’t involved, but the process required for Kizuna to install a Heart Hybrid Gear’s Core comes pretty close to it in the light novel. In the anime adaptation however, the scene where he installs Sylvia's core cuts to the outside of the laboratory right when they are about to start, and when it goes back to them it’s already over.
    • Subverted in a Meta sense. The scene is fully show as a Special in the 5th Blu-ray.
  • Spared by the Adaptation: Brigit, one of the members of Masters, dies in the light novels but survives in the anime.
  • Spell My Name with an "S": Yurishia's Hybrid Gear, Cross/Kuros.
    • Gravel/Grabel, and the Batlantis/Vatlantis Empire.
  • Situational Sexuality: The humans that live in the AU are all women, so any characters that lives there is a lesbian “by default”. At least until Kizuna arrives and changes the situation…
  • Stripperific: The pilot suits that the main cast uses. As a case of In-Universe Values Dissonance, the clothes that the people from the Batlantis Empire casually wear are not what most people from “Lemuria” would consider appropriate for a stroll in the city.
  • Super Mode: Aine, Hayuru and Yurishia can access a so-called "Immoral Weapon" by getting their Hybrid Count above full. And the only way to do that is for Kizuna and any of the girls to perform a more intense version of Heart Hybrid, that is, Climax Hybrid. This procedure also powers up Eros, making it more useful in combat.
  • Technical Virgin: Kizuna and his Battle Harem. They engage in several different sexual acts during the course of the series, but they never have genital-genital sex.
    • Or specifically, no 'penetration'. Kizuna had genital-genital sex, just not actual penetration. Though the first to engage in that act was his sister!
  • Theme Naming: The "-ros" series of Heart Hybrid Gears. (Aine's Zeros, Hayuru's Neros, Yurishia's Cross/Kuros, and Kizuna's Eros.)
  • Theme Tune Cameo: The dance-off between Yurishia and Scarlet in Episode 7 features the main theme.

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