What Are The Best Plot Ideas For The Last Guardian Fanfiction?

Okay, so I see this pop up a lot in 'Sonic' fan circles, and honestly, the most intriguing angle to me is leaning into the very beginning of their dynamic. We only got that one scene in 'Shadow the Hedgehog' where Maria asks him to protect humanity, right? That’s the whole foundation. But what if her promise wasn’t just a noble last wish, but a literal, binding charge? I’m thinking a plot where Shadow, after all his post-ARK adventures and fights, finds the 'hero' role hollow because he's fulfilling a request, not a personal choice. The story would be about him struggling with the concept of free will versus programmed purpose. Maria’s memory becomes not just a comfort, but a ghost he can’t escape, questioning if his entire identity is just an echo of her. For this to work, you’d need a new threat, maybe something that doesn’t clearly fall under 'protecting humanity'—like an internal G.U.N. conspiracy or a conflict that forces him to choose between the letter of Maria’s wish and its spirit. The climax wouldn’t be a bigger blast, but a moment where he finally makes a choice for himself, perhaps one she wouldn’t have agreed with, and he has to live with that dissonance. It’s less romance and more a psychological deep-dive, playing with the messed-up implications of being created for a singular purpose. The bittersweet part is that achieving true independence might feel like a betrayal of her, which is a richer conflict than just reuniting them in a sappy afterlife scene.

Honestly, crossovers are tricky because tonal mismatch kills 'em. 'Persona' and 'Dark Souls'? Could work if you think about it. The Velvet Room's an extension of the collective unconscious, and Lordran's a world built on souls and cycles. A Trickster showing up there, trying to navigate a land without clear social links, where the fog and hollowing could be a manifestation of despair... Igor would have a field day. The challenge is making the combat styles mesh without one side just steamrolling. A Persona user's power is psychological, so facing mindless hollows changes the dynamic completely. Maybe the real boss is the environment itself. That said, I've never seen it done well. Most attempts just drop the Phantom Thieves into another setting and have Joker be cool, which misses the point. The appeal would be in the clash of philosophies, not just the powers.

Okay, so the original series is basically a sandbox for ‘what if these guys had more internal drama?’ One angle I’ve always thought could be juicy: make Hitchcock’s gambling a real problem that puts the whole team in danger. Not just a quirk, but an actual liability. Maybe he owes money to someone connected to the local resistance, and it compromises a mission. Troy has to decide between covering for him or following regulations, with Moffitt stuck in the middle trying to be the voice of reason. It writes itself, really. Another route is to lean into the ‘found family’ tension of them being stuck together 24/7 in that jeep. What happens when they’re holed up somewhere for days, waiting? Pettigrew’s optimism wears thin, Tully gets quietly pissed off about something small, and it all boils over. The external conflict with the Germans almost becomes background noise to their own bickering. That kind of character-driven stuff always gets me more invested than another straight-up ambush plot.

That's a tough one because the original material, 'Rakudai Kishi no Cavalry', gives them such a solid dynamic from the start. It's not enemies-to-lovers, it's rivals-to-partners who are already deeply committed. So I think the best plots are ones that test that bond in new ways, without undermining it. High-stakes tournament arcs are obvious, but they've been done. What about a story where Stella's royal duties pull her back to her homeland for a political marriage alliance, forcing Ikki to navigate a completely different kind of challenge—court intrigue and diplomacy—where his Blazer powers are useless? The conflict isn't physical, it's about him proving his worth in a system that despises commoners. Alternatively, a role-reversal scenario could be fascinating. Some magic mishap swaps their Blazer abilities, so Ikki has to wield Stella's overwhelming, fiery power while she's stuck with his precise, underdog technique. The struggle to adapt would reveal new layers about how they see each other's strengths. Or a classic 'amnesia' plot, but done smartly: Ikki loses his memories of Stella entirely, yet his muscle memory and instincts in battle still perfectly complement hers, creating this heartbreaking gap between his conscious rejection and his soul's undeniable recognition. The key is to put pressure on their trust, not break it.

Man, the whole "Tournament Aftermath" plotline is ridiculously overdone at this point, but I guess that's the appeal? The premise of the fighters having to figure out what to do after the tournament ends basically writes itself. I always find myself re-reading the ones where they have to deal with the consequences of all that magical or interdimensional energy being unleashed, or the ones where a neutral party like Isabelle or a civilian has to organize a support network for the injured combatants. It's a sandbox for exploring characters who never got a chance to interact, or asking what a Mario or a Samus would actually do with their downtime. The best ones don't focus on fighting at all; it's all about the bizarre found-family dynamics that come from stuffing all these personalities in a shared space. I'm less convinced by the ultra-serious 'what if a fighter died' arcs, though. They can feel a bit melodramatic, especially when the tone clashes so hard with the source material. Give me a silly fic about Villager and Isabelle running a chaotic bed-and-breakfast for the roster over a grimdark Kirby tragedy any day. The aftermath stories work because they embrace the inherent weirdness of the crossover, not in spite of it.

the ones that really stick with me tend to lean into the arranged marriage trope. It's such a rich setup for them. A plot I'd love to see more of isn't just them being forced together, but them actively conspiring because of the arrangement. Maybe they agree to the marriage to pacify their families and the public, but secretly make a pact to live separate lives once they've produced an heir. Then the story becomes about how that pact slowly, painfully unravels over years. They start as co-conspirators, then reluctant co-parents, then something much deeper, all while maintaining a perfect public facade. What makes it interesting is the inherent secrecy and the weight of pureblood expectations. Astoria's illness adds another devastating layer—the race for an heir isn't just about duty, but about creating a legacy before she's gone. The emotional core is in the quiet moments: Draco researching healing spells he'll never admit to, Astoria pushing him away to spare him grief, all while the political world of post-war Wizarding Britain watches their 'perfect' union. It’s less about grand romantic gestures and more about the erosion of walls built on pureblood pragmatism.

I just can't get enough of seeing Six and Mono sticking together after the end. It's almost an obsession in the fic scene. Everybody is trying to mend that broken bridge after that betrayal. I'll read anything that gives them a chance at a real, quiet friendship somewhere safe. That AU where the kids escape and get adopted by a weary, kind adult in the normal world is huge. They're just trying to figure out how to be kids again—sleeping in beds, going to school, but always looking over their shoulders. The angst comes from the trauma, not the monsters, and it hits different. It’s less about scares and more about the slow, painful process of learning to trust. I've also noticed a weirdly specific trend: crossover fics with 'Coraline'. Something about other worlds with tiny doors just fits perfectly. The Thin Man and the Other Mother would probably get along terribly, which is exactly why it works. Honestly, I've read at least three where Mono mistakes the Beldam's world for another part of the Transmission.

You know, focusing solely on romance plots for Sans and Grillby feels like it misses the mark. Their dynamic in the game is so ambiguous—a customer and a bartender with a possible history, sure, but the source material gives us almost nothing concrete. That's the beauty of it for writing. I've read a bunch where they're instantly a couple, and it often rings hollow. My favorite fics lean into that mystery. One idea I'm partial to is a noir-style detective story where Grillby's bar is a neutral ground for monster political dealings, and Sans, with his connections and lazy genius, is the only one Grillby can reluctantly trust to navigate a conspiracy that threatens the surface. It's less about kissing and more about the tension of two very private people being forced to cooperate. You could explore Sans's scientific past, Grillby's role as an information hub, all that good stuff. The 'plot' is the case, but the relationship builds in the margins—a shared glance over a glass of whiskey, a clipped warning muttered when no one else is listening. That slow, quiet understanding feels more true to their characters to me than grand romantic gestures. Another angle that doesn't get enough play is pure slice-of-life, almost anti-drama. The Underground had to have had decades of mundane existence before Frisk showed up. What did that look like for them? A fic that's just vignettes: Sans trying to pay his tab with terrible puns, Grillby silently polishing a glass while Sans naps in a corner booth, the unspoken routine of it all becoming a kind of comfort. Maybe Papyrus drags Grillby into one of his 'human friendship training' sessions, and Sans has to intervene, leading to the first real conversation they've had in years. The romance, if it's there, isn't a destination; it's the quiet acknowledgment that this person, in this specific space, is a part of your weird, fractured life. That stuff hits harder for me than any explicit confession scene.

Honestly, I've never been sold on the "golden trio gets a fourth member" concept—it feels forced. What draws me in is a story that treats magic with a sense of danger and consequence again, something 'The Cursed Child' sort of dropped. I'd read a plot where the Statute of Secrecy starts to genuinely crumble in the 2010s, with smartphones and social media, and Harriet has to navigate being a public icon in a world that's panicking. Maybe she's a reluctant figurehead for a new Department of Integration, constantly at odds with purists. It's less about another Dark Lord and more about systemic, bureaucratic friction. The real conflict could be her fighting not with curses, but with legislation and public opinion, trying to protect both worlds from each other. An unrelated idea I toyed with is a low-stakes mystery: Harriet, after the war, takes a temporary teaching post at Ilvermorny. She's there for a cultural exchange, but gets pulled into solving the strange, non-malicious pranks disrupting the school. The plot would hinge on her realizing the "pranks" are actually attempts by a homesick first-year to recreate British magic, leading Harriet to mentor this kid. It's quiet, character-driven, and explores how magic feels in a different cultural context.

I got you! Epic adventure Zelda fics are my absolute jam, but honestly, finding ones that truly nail the grand journey feel of the games can be tough. A lot of authors get stuck retelling the game plots beat-for-beat. The stories that work for me are the ones that feel like a new game entirely. 'Legends of a Dragonfly' over on Ao3 is a monster of a longfic, but it's stuck with me. It starts post-Breath of the Wild but goes in a wild direction with Zonai lore, a new continent, and a threat that forces Link and Zelda to work with an uneasy alliance of Gerudo, Rito, and even Lynels. The author builds a whole new set of ruins to explore, which hits that 'epic discovery' note perfectly. Another one, 'Shadow and Silver', crosses over with 'The Legend of Dragoon' of all things, but it's less about the crossover and more about using that world's magic system to explore what happens when the Triforce isn't the only source of divine power. It gets weird and cosmic, but the trek across a corrupted Hyrule Field felt genuinely tense and dangerous, like the best parts of 'Twilight Princess'. If you're willing to look outside Ao3, some of the old 'Hyrule Warriors' era fics on FFN had a real pulpy, swashbuckling energy. Lots of dimensional hopping and army battles. Finding the good stuff is always a gamble, but those two I mentioned are a solid start.