History Fanfic / TheLightOfAbyss

** During the arc of Amity running away, Eda is mentioned to have looted some textbooks that the high school in Gravesfield threw out and sold them to the library. Later Amity starts studying them as part of her plan to prove that she's an awesome girlfriend, and it's mentioned again during he narration covering the time skip between the failed petrification and Luz's return to school. This pays off when [[spoiler: Amity introduces herself to Camila and explains that she's Luz's girlfriend and that she loves her, in Spanish and reveals to Luz that there were Spanish books in that collection and that she's been trying to learn.]]

* ChekhovsGun: When telling Amity things about the Human Realm, Luz mentions symbiotes and sketches Carnage as an example, which ends up giving Amity nightmares. Which in turn provides Grom with fuel when she's fighting it, taking on Carnage's form to allow it to get the upper hand on her when she'd previously been [[CurbStompBattle dominating it]].

* YinYangBomb: A literal example, as just prior to the duel with Amity, Luz and Eda get the idea to see if something happens if Luz activates or draws a light glyph with her shadow powers active, and find out that doing so causes the glyph to turn into a miniature explosive that can apparently disrupt magic, as Amity is unable to use any magic immediately after her Abomination is destroyed by them. The other glyphs similarly explode, but besides Ice and Fire glyphs blowing up bigger than Light and Plant being more like firecrackers than a grenade there doesn't seem to be any noteworthy differences in the blasts.

* AdaptationalBadass: Thanks to traces of symbiote matter Luz inherited from Manny and Camila being awakened by the BackgroundMagicField in the Demon Realm, giving her multiple abilities she doesn't have in canon, like enhanced strength when her shadow aura is up and sensing emotions. She can also use them to [[YinYangBomb turn her light glyphs into an actual offensive power]].

* BlantantLies: As in canon, as Amity realizes after the failed petrification, especially after he claims that Luz was blessed by the Titan with her new abilities, pretty much everything that Belos says is this.

* ApatheticTeacher: Amity calls Lilith out as a lousy teacher during their fight in Chapter 13. While Amity has to admit that she ''did'' learn a lot from the other Witch over the two years they spent together, she also points out how Lilith never gave her any ''support'', with every lesson being clinical and academic, and the one time that she ever got any positive feedback it was a lie (so Lilith could plant the Power Glyph on her neck). In contrast, just a short time being mentored by Eda at the Knee allowed her to get past needing training wands and learn the fire spell.

** Thanks to [[spoiler: Luz's powers fully unlocking]] during the fight with Belos at the petrification ceremony, the Portal Door never ends up destroyed and stays in the Owl House's custody.

* IfYouEverDoAnythingToHurtHer: Boscha evidently gives Luz a speech like this after she and Amity get together at Grom, saying that she'll feed Luz her own [[WesternAnimation/InvaderZim squeedlyspooch]] if she hurts Amity.

* BlackAndWhiteInsanity: As noted by WordOfGod, Belos' FantasticRacism has warped his mentality into a form of this, where he views all humans as "good" and all witches as "evil", which is why he's so relatively lenient towards Luz.

* EasilyForgiven: Unlike canon, Eda eventually works up the motivation to interrogate Owbert about the events of Escape of the Palisman(which occurred offscreen) but because Owlbert forgave Luz, Eda only made Luz take him out for ice cream in order to earn her trust back.

* CuteMonsterGirl: Amity's Abomination form form is noted to have a "cute" look to it by Lilith.

* AdaptationalEarlyAppearance: Hunter appears at the Covention, long before his canonical first appearance.
** The BATTs make their debut before their canonical appearance by destroying the petrification machine.

* BigDamnHeroes: When Willow, Gus, and Amity manage to get the crowd at Eda’s petrifaction ceremony on her side, the BATTs show up and destroy the machine before Hunter can intervene.

* LanguageEqualsThought: The residents of the Boiling Isles don't have specific words for sexual orientations because, as a NonHeteronormativeSociety differing orientations are too normal to make a fuss about.

* ICantBelieveAGuyLikeYouWouldNoticeMe: When Amity gives Luz the note asking her to Grom, Luz is surprised that someone "pretty, smart, classy, sophisticated, and cool" like Amity would like someone like her, given that her previous crushes had rejected her, viewing her as creepy or cheesy. She's ''so'' surprised that Amity (or anyone) would ''like'' like her by the time she processes it all and realizes that she ''does'' like Amity back and would like to go to Grom with her, Amity's already been announced as Grom Queen and run off.

** Luz recites a poem paraphrased from Creator/Sappho to Amity and offers to play her "the gooiest, cheesiest love song in ''all'' the human realm" which turns out to be [[WesternAnimation/StevenUniverse Let Me Drive My Van Into Your Heart]]

** Luz and Amity's defeat of Grom involves doing a waltz in order to fire a combined fireball that blasts a whole through the monster and, er the following chapter, promoted a girl from the HAS to ask if it was a deliberate reference to an "animated documentary" from the human world that Luz described as a [[Anime/MobileFighterGGundam work of fiction about the nation that rules the world being decided by a giant robot martial arts tounrmenet]]

* AdaptationalNiceGuy: Boscha is much more open about how seriously she takes her friendship with Amity, doing her best to stop anyone from reading the journal pages that Edric and Emira posted around the school, and being extremely relieved when Amity comes back after having run away. And she agrees to stop being a bully (both in general and specifically towards Willow and Luz) just because Amity asks her to.

* ChekhovsGun: When telling Amity things about the Human Realm, she explains about Carnage, which ends up giving Amity nightmares. Which in turn provides Grom with fuel when she's fighting it, taking on Carnage's form to allow it to get the upper hand on her when she'd previously been [[CurbStompBattle dominating it]].

* MamaBear: Eda quickly takes Amity under her wing during her time as a runaway, and later makes it clear to Alador that if Odalia drives her away again, Eda's outright keeping her. Shortly before, she threatens to run Principal Bump through a woodchipper if Luz was named Grom Queen.

** Disney briefly used "Luzity" as a ship name for Luz and Amity instead of "Lumity", which Hooty uses as as suggestion when trying to come up with a ship name himself, Eda saying that it sounds like a herbal supplement from a 3 am infomercial.

* LoveEphiphany: Luz guesses that she likes Amity when she realizes how much she enjoys spending time with her. She ''knows'' she likes Amity when her thoughts turn to how [[SummonBiggerFish calling the Avengers hotline]] to get Doctor Strange's help with Grom would necessitate exposing that she lied about going to summer camp but that she's still willing to do that for Amity's sake.

* LoveEphiphany: Luz guesses that she likes Amity when she realizeshow much she enjoys spending time with her. She ''knows'' she likes Amity when her thoughts turn to how [[SummonBiggerFish calling the Avengers hotline]] to get Doctor Strange's help with Grom would necessitate exposing that she lied about going to summer camp but that she's still willing to do that for Amity's sake.

** Luz and King deliberately and unknowingly, respectively, reference Theatre/ThePiratesOfPenzance when King offers to make Luz a major-general in his army.

* MamaBear: Eda quickly takes Amity under her wing during her time as a runaway, and later makes it clear to Alador that if Odalia drives her away again, Eda's outright keeping her.
* MomentKiller: When Hunter is giving a big speech to setup Luz and Amity's duel, Luz ends up interrupting to exclaim in shock when he mentions Eda and Lilith being related. This throws Hunter off, causing him to forget what he was going to say and decide to just start the duel.

* ShipperOnDeck: As part of her IWantMyBelovedToBeHappy stance, Boscha immediately makes herself Amity's wingman in regards to hooking up with Luz.

* TakeThat: When Luz is telling Amity about the Superhero Civil War, she explains how it was all engineered by Mephisto as part of his plan to manipulate Spider-Man into giving up his marriage. She writes it off as a petty act by a "complete loser", with Luz speaking dismissively of his ranting about "Spider-Man being more relatable when he was single", which was the official explanation given for ''ComicBook/OneMoreDay'' by Marvel.