There are certain responsibilities which come with being a Princess, and Twilight's still learning about most of them. She's slowly adjusting to meeting diplomats, attending ceremonies, and hosting functions. However, being on the receiving end of the scheduled, contractually-obligated kidnapping came as something of a surprise. And she really doesn't understand why she's supposed to cooperate with it.
Her kidnapper's starting to become a little frustrated.
Your Alicorn Is in Another Castle is a crossover between My Little Pony: Friendship Is Magic (using most of the setting, characterization, and magic rules previously established in the Triptych Continuum) and Super Mario Bros., written by Estee. The story can be read here
but has not been updated since 2017.
Your Alicorn Is in Another Castle provides examples of:
- Anywhere but Their Lips: As said in the chapter "Coding Of Honor", in this version of Super Mario Bros., Mario has never gotten any kisses, not even on the cheek, from all his Save the Princess Peach-ing.
- Because Destiny Says So: Bowser's destiny is to kidnap princesses, and therefore he must kidnap princesses. Trying to repress the desires and Screw Destiny pretty much wrecked his life. Bowser mentions that it's easier to explain his history to a pony because their cutie marks give them a healthy respect for this trope.
- Bondage Is Bad: Bowser confesses to Twilight that one of the downsides to his business is that, every so often, he runs into a genuinely sadistic princess, masochistic hero, or both, which he finds rather disturbing. He's particularly worried about one specific repeat customer, who is quite obviously Princess Peach, who he denounces as a textbook abusive relationship. He even goes so far as to admit that his worst nightmare has started becoming that he will finally tell the truth to her hero (obviously Mario) and that all he'll get back is a nonchalant shrug and an indifferent, "so what?"Bowser: "You meet a lot of weirdos in this business."
- Can't Move While Being Watched: Referenced in the chapter "Inevitability Frames", after Bowser calls for some of his troops to be spawned, and has an audience:"Look away," he told her. "They don't spawn when someone's looking at them. Just glance to the side."
- Chronic Villainy: Bowser has the talent to perfectly kidnap princesses, but that came paired with a destiny that dictates that he must kidnap princesses. For a time, he tried to Screw Destiny and live a normal life, but the pressure of fighting his destiny ended up completely destroying his life and marriage. Fortunately, by the time of the story he has discovered a loophole: his destiny requires that he kidnap princesses, but it does not require that the princesses actually be unwilling, or that he hang on to them once they've been kidnapped. And more than a few princesses across the multiverse are quite willing to be temporarily kidnapped, and will even pay handsomely for it, if it means they have an iron-clad excuse to take time off from their royal duties and for once truly relax.
- Convection, Schmonvection: Lampshaded. When Twilight teleports out onto one of the platforms over the lava, she fully expects to be desperately trying to shift heat away from the platform to keep from getting burnt, and is astounded when pegasus sight reveals that the heat simply stops about a hoof-width above the lava.
- Cut Lex Luthor a Check: The basic premise of the story. What do you do when you have the talent to produce perfect plans for kidnapping princesses, and an ever-mounting compulsion to use that talent? Go into business temporarily kidnapping princesses to allow them a break from their duties.
- Damsel in Distress: Bowser does this throughout The Multiverse. Because he's contracted to. There are some ways this trope gets played with though: he often offers his services to princesses, who see getting kidnapped as a way to let down their hair, remove their mask, and just be a person rather than a ruler for a while. In fact, the whole story started because Celestia had hired him to kidnap her so she can get out of boring treaty negotiations, but forgot to tell him which alicorn was her.
- Damsel out of Distress: The second Twilight woke up in her room/hotel suite, she packed as much food and water as she could and tried to escape. When the guards came to stop her, she accidentally removed the wings from one of them. Then, when left alone again, she tried to escape again. It was only after Bowser himself showed up and explained that she stopped.
- Decision Darts: The recommended method of planning for diplomacy with buffalo tribes is first to work out the normal amount of time it should take, then toss a dart and use the number it lands on as an exponential modifier.
- Disability Immunity: In the chapter "The Kaizo Trap", it's mentioned that a certain embassy tends to be the source of some very loud and irritating sounds, which tends to drive property values down, so those who are deaf or otherwise hard of hearing and thus unaffected by it will happily buy up the property around said embassy:In this case, Chief Kaizo had arrived in Canterlot three days prior to the meetings, mostly because it took three days for the embassy to properly consecrate itself for his stay and he had to personally oversee all of it, generally while leading the extremely loud cleansing chant which continued under both Sun and Moon before starting all over again at the moment anyone dropped a note. (Property values tended to be rather low in the vicinity of that embassy, and anypony who was hearing-impaired took happy financial advantage.)
- Double-Meaning Title: The chapter title "The Kaizo Trap" references the annoyance of a character named Kaizo, and also Kaizo as a Super Mario Bros. fan-term.
- Exact Words: Bowser's destiny dictates that he must kidnap princesses. It does not necessarily require that these princesses be unwilling to be kidnapped, or that he hold on to them once they've been kidnapped.
- Eye on a Stalk: When people are peeking out of doors in the chapter "Inevitability Frames", some eyes "emerged on stalks".
- A Form You Are Comfortable With: Bowser explains his princess-kidnapping destiny to Twilight by showing off what looks like a pony-style cutie mark. When Twilight asks how exactly he did that, he says that Koopas don't have actual cutie marks, but it wasn't an illusion either — he "adjusted [his] resolution", a process not further described but which would seem to change his appearance to match an expected setting.
- Functional Addict: Bowser is a fairly unusual variant of this trope. He is required by destiny to kidnap princesses, and when he tried to avoid doing so he started suffering from something similar to withdrawal symptoms. However, he has since discovered a loophole: his destiny requires that he kidnap princesses, but it does not require that the princesses in question be unwilling to be kidnapped or that he hang onto them once they've been kidnapped. And it turns out that quite a few princesses and other authority figures throughout the multiverse will pay handsomely to be temporarily kidnapped in order to have an ironclad excuse to lay aside their duties and just relax for a few days.
- Gilded Cage: Invoked, then averted. Twilight believes that (for reasons she can't fathom) the prison she's been sent to has surprisingly lavish cells. It's then revealed to her that they aren't cells at all, they're hotel rooms.
- Gold Digger: Discussed in the chapter "Convectional Errors", where it's brought up that gold diggers are one of the things that 'Prince' Vladimir Blueblood is immune to:for it turned out that even those generally willing to put up with near-endless demeaning in order to gain access to some level of wealth had their limits.
- Got Volunteered: The note Bowser leaves after kidnapping Twilight tells the ponies to send one of their own to save her, someone who will die many times, "somepony who deserves it." After reading the note, the officials decide to send Prince Blueblood, knowing that it will at least get him out of their hair for a bit.
- Imaginary Friend: Twilight is mentioned to have had one as a filly. They resurface when she's under the influence of apparently hallucinogenic smoke:it meant she had to subject herself to three hours of dancing, chanting, spirits, and herbal smoke which her fillyhood imaginary friend generally insisted wasn't all that bad, especially since it allowed said friend to directly make the comment about thirty minutes in.
- Instant Sedation: The first chapter ends with Twilight being sedated and passing out immediately:"All right," the supervisor said, and flew down to her, keeping pace with her trap. "Now in order to prevent enduring what we've been told is a rather boring trip, allow me to introduce you to another new addition into our package." It held out a liquid-soaked square of silk, worked it through the net and pressed it against her snout.
The last words Twilight heard before going unconscious were "We're all looking forward to hearing what you think about our choice in floral scent." - Kaizo Trap: The Double-Meaning Title "The Kaizo Trap" references the annoyance of a character named Kaizo, and also this trope.
- Kill It with Fire: Considered as an option in the second chapter, to deal with an unwanted object:Twilight stared at the card for a while. There didn't seem to be much else a sensible individual could do with it, especially as the room contained nothing suitable for setting it on fire.
- The Kindnapper: Bowser is able to make a business out of professional princess kidnapping by invoking this trope — for far too many princesses and other authority figures, a brief kidnapping (something supposedly "beyond their control", but which he and they have secretly set up in advance) is the only way their subjects will let them lay aside their responsibilities and be a person rather than a princess or a queen or an avatar or a whatever for a few days and truly relax until a hero comes to rescue them.
- Mythology Gag: When talking to Twilight about how his business is popular with princesses who know of it, Bowser talks about what is very obviously Princess Peach and Mario. He also gets quite meta with the discussion, clearly invoking the memetically infamous repetitiveness of the Mario games' plot as well as how little reward Mario is typically shown to get for his heroic efforts due to the strict G-rating of those games.
- Nice Job Fixing It, Villain: Invoked by Bowser, who notes that he likes to believe that his offering his services as a guaranteed de-stressing routine for princesses has prevent more than a few wars or princesses just snapping and turning their magical powers on their overly demanding followers.
- Poor Communication Kills: What sets the whole plot off. Celestia booked a kidnapping with Bowser to get out of a particularly annoying treaty obligation, but neglected to mention that the alicorn population of Equestria had gone from one to four since the last time she'd contacted him. Consequently, Bowser's instructions to the kidnapping squad identified their target as "the only one in the entire world with a horn and wings", resulting in them snatching Twilight by mistake due to her being the first alicorn they happened to come across.
- Punctuated! For! Emphasis!: When talking about clients in the chapter "Inevitability Frames":I'd hate to lose her — but I can afford to drop one here and there. And besides..." The lips curled. "...now I just. might. have. you."
- Rage Quit: Noted in the second chapter, as a video game reference:Frustration, bouts of cursing, angry invocations of local deities, and attempts to rage-quit are hereby contractually agreed by whoever enters to be entirely the fault of the visiting pony and as such, no emotional damage lawsuits will be honored.
- Save the Princess: Bowser instigates the trope by kidnapping princesses from across The Multiverse and leaving a message effectively daring a hero to come and save her.
- Screw Destiny: Invoked and Subverted. Bowser tried to resist his destiny, but it drove him nearly mad, and eventually discovering what he was repressing disgusted his wife so much that she divorced him and took their son with her when she left.
- Sizeshifter: In the chapter "Inevitability Frames", "size-switching" is mentioned, which by name and context, implies it's this. In the next chapter, Twilight notes that Bowser himself is somehow able to change size without her being able to see it actually happening, and spends much of her time trying to figure out how this even works.
- Sleepwalking: Part of what happens when Bowser tries to avoid his destiny — he sleepwalks to his desk and starts making plans for kidnappings:Bowser: I would sleepwalk, wake up at my desk, find plans I'd sketched during the night.
- Small Name, Big Ego: Not that Prince Blueblood is a particularly small name (being Celestia's nephew and all), but his assessment of himself as The Most Important Pony Ever (sic) is... somewhat overstated.
- Smooch of Victory: As said in the chapter "Coding Of Honor", Mario doesn't get this much of a reward from all his Save the Princess Peach-ing:And he just keeps rescuing her, and she smiles and thanks him and never, ever gives him so much as a single peck on the cheek
- Speak in Unison: In the chapter "Inevitability Frames", some characters squeak in surprise in unison:More than three dozen turtles simultaneously squeaked.
- Sympathy for the Devil: When Twilight learns why Bowser kidnaps princesses, with the Koopa king even using a magical trick to show her what his version of a cutie mark would be, Twilight is absolutely horrified, with the narration noting her instinctive revulsion to whatever force would be so cruel as to give Bowser such a destiny and her wish to punish it for that cruelty.
- There Is Another: The plot happens because where there was one alicorn, there are now four... and Celestia didn't bother to tell King Bowser about this. He's quite irritated when he realizes the issue.
- This Is Your Brain on Evil: Bowser has an extra-nasty version of this, in that he didn't even have to make the choice in the first place. He simply was given (or acquired, or something) the destined role of Princess Kidnapper, and when he quite naturally refused to kidnap Princesses he was plagued with intrusive thoughts and other withdrawal-esque symptoms.
- Tickle Torture: In the chapter "Inevitability Frames", this is how Carl gets his wings back:"Two of us," the turtle lectured, "have to stand next to him. One on each side, holding a wing. And then he has to step between us. Followed by having four additional staff members immobilizing him. One to each of the limbs he still has attached. To keep him from fleeing. From the torture."
"Um," Twilight tried, and instantly regretted that.
"Carl," the turtle sighed, "is extremely ticklish — and here is your room." - Tough Leader Façade: For far too many princesses and other authority figures, a brief kidnapping is the only way their subjects will let them lay aside their responsibilities, be a person rather than a princess or a queen or an avatar or whatever for a few days, and truly relax.
- Waking Non Sequitur: Twilight's first thoughts when she wakes up after being kidnapped is her thoughts on the scented chloroform (thinking that the rose was a nice touch but that they should dial back on the citrus).
