Maybe a funny AU where after some time Byleth receives her Goddess powers, she unintentionally turns into a dragon. Seteth could feel a migraine coming, Rhea is saying something about this being another divine gift from the Goddess, and everyone else is either screaming or has fainted. You could add some Dimileth if you want.
This is funny because Byleth had the perfect set-up for gaining Dragon Transformation powers but we never got that. And, frankly, we were ROBBED. I mean, Byleth’s hair turned green, eyes turned green, might as well have gotten the pointy ears and Dragon-ness. Seteth outright said he used to be able to transform and just lost the ability over time because of lack of use (Flayn never tried but probably could), and Rhea actively uses it, so Byleth might as WELL have it. (But I do know why we didn’t have it in the game. One, Corrin in Fates (I didn’t like Fates) had it and we wanna be original. Two, this has a very serious story with very human focused conflict and the divine nature of things kinda takes a back seat to the human element. Sure, divinity is a core motivation for everyone, but ultimately it’s HUMANS who are the ones causing the conflicts in the game.) That all said, lets get on with Dragon Transformation AU!
So, Byleth is fully fused with Sothis now. Their hair is green, eyes are green, got the pointy ears. People are rightfully worried, but overall there doesn’t SEEM to be anything too worrisome after Byleth literally became divinity and ripped their way between worlds...health wise anyway.
Byleth is trying to get used to her new body/powers, as you would if you fused with a Goddess that was always, technically, you. The Sword of the Creator is stronger, and using Divine Pulses is easier, but there’s...more...Byleth can feel it...
Reaching for it while on the training grounds might have been a bad idea in hindsight.
One moment Byleth is trying to figure out WHAT this new power is, the next thing she knows she’s destroyed the training hall and people are running around and screaming about a dragon.
Oops.
Luckily no one got hurt. Dimitri and Dedue, frequent guests of the training ground, got out with the other knights just fine. Though everyone is understandably upset and there are guards running around and everyone is screaming for Byleth and people miiiiiiight think she’s dead.
Byleth instinctively states that she’s not dead in her usual deadpan way...and it works because she’s apparently a TALKING dragon now. Everyone just kinda...stops...stack jawed, because wouldn’t YOU be if your teacher that’s apparently personally blessed by the goddess turned into a talking dragon and destroyed a building an accident? Everyone just kinda stares and drops their weapons because holy shit.
Rhea is frantically making her way to the mess with a small army of guards. Beside her Seteth is pinching the bridge of his nose, looking very much put out and like he would like to die now please.
Rhea assures everyone that everything is fine, yes, really, this is CLEARLY another divine gift from the goddess that Byleth just discovered and they should take this as a blessing. She’s giving a mini sermon. When she’s done she asks them to move along please. No one moves along because the most popular teacher in the school just turned into a dragon and why the fuck would they move on. Hannamen is foaming at the mouth he’s so excited. Linhardt is actually awake he’s so interested. There’s a huge crowd of students and faculty wondering WHAT happened. Rhea just turns to Byleth and asks her to turn back into a human now.
...Byleth doesn’t know how...
The next day or two is just Rhea and Seteth trying to coach Byleth on how to turn back human without giving away that they can totally turn into a dragon too. They try to get the crowd to leave, but there’s always SOMEONE trying to get close (looking at you Hannamen, no you can’t have a blood sample). Not helping matters is Byleth’s dragon instincts making her want to collect whatever she considers “treasures” and sleeping with them in a little next. She gets testy if her treasures aren’t in eyesight.
Her treasures are all her students and friends. Gatekeeper keeps crying because he needs to guard the gate but Byleth won’t let him leave. Shamir wishes she’d never fucking come to Fodlan. Flayn thinks it’s great, though, she considers it valuable classmate bonding time. Claude sits back to relax while watching Rhea and Seteth because this is the easiest way he’s ever gotten information. Edelgard and Dimitri despair.
















