Tokoyami didn't consider himself a romantic person. He was the Prince of Darkness and an Emperor of The Night. His quirk helped with his aesthetic and everything else about him seemed to file into the goth area. Even his birthday fit the bill, being the day before Halloween -he cursed his mother for not holding it just a day longer. Tokoyami refused to let anything cute or light show through his dark facade.
His loving and supportive boyfriend, Kouda, knew this very well. They both expressed their love in seemingly unnatural ways. As Tokoyami loved to send his soul mate poems and letters, showing his affection with dark metaphors, Kouda was much more quiet with his affection. He had never said the words "I love you" -mainly because he couldn't physically say it- or given Tokoyami a box of sweets, but all of that fluff was a waste, in the end. What Kouda did to show affection was ten times better than any sappy romantic novel could show.
Kouda whistled.
Well, it was more of a chirp than anything. It mostly happened when they cuddled, Tokoyami laying his large bird head against Kouda's legs. They would simply exist in each other's presence, not saying a single word. Every so often, when they were alone, Kouda would let his shyness go, just a bit, and he would chirp at Tokoyami in a language neither really understood but felt.
The first time he heard it, Tokoyami froze, feeling his feathered cheeks ruffle and he looked at his boyfriend; who shared a flustered look. Kouda's soft hands shook as he struggled to sign his apologies fast enough. Slowly, Tokoyami pulled the other boy's hands toward his chest, then gave him a soft chirp of his own.
They both blushed harder, but Tokoyami could tell that their hearts grew three sizes bigger.
Now, months after the very first incident, Kouda would chirp at him randomly: cuddling, doing homework together, training in the gym or even after class. Every time he heard the soft, yet beautiful sound, his hidden bird ears would amplify and he would return with his own. It seemed to affect Kouda the same way.
Only after months of this interaction, did Tokoyami actually ask why this felt so nice.
It's because of my quirk. The boy signed. I can hear the meaning behind bird's calls and I've been trying to mimic them for years. I didn't realize it'd work with you too.
"Do birds usually fall in love with you every time you do it?" Tokoyami let a small smirk cross his beak.
Kouda blushed, covered his mouth but let out a soft laugh. No. Not usually. They do like to listen, though. Sometimes, they teach me songs. Do you want to hear one?
Tokoyami found it impossible to refuse. A song not only taught to him by an entirely different species, but a song sung by his wonderful boyfriend? He would be a fool to refuse such a treat.
The song started off like any other bird call, repeating a single tone and waiting a few seconds for a response. After a few calls, Tokoyami found himself responding, singing the melody in his own tone. Kouda smiled and called again, receiving the same answer. They laid there, on Kouda's warm bed, surrounded by bunnies, singing to each other. If Aizawa-sensei had been listening, he might have suspected they were going insane from stress -which wouldn't be unlikely, judging from how their school year has been going.
After what seemed like both hours and seconds, Kouda ended the call, only returning a warm, sweet smile. Tokoyami let his fasague down, forgetting about the darkness and shadows he always confined himself to. For a single second, they were completely disconnected with the world, only caring about the color of the other's eyes and the love they felt for the other. Releasing a soft sigh, Tokoyami leaned up and rubbed his beak against Kouda's cheek, earning a soft gasp. After a second or two, he returned the gesture.
The parts of his beak that touched Kouda tingled with soft electricity. The more he leaned into his boyfriend's touch, the more his shadowed heart grew. Who knew that this brilliant boy could completely flip his world around?
Sadly, the contact had to stop when Kouda got too shy to continue, but it was okay. Tokoyami knew the boundaries were high with Kouda. He didn't like any form of humiliation, unless it was just the two of them. He hated being called out and even talked about in a large group. That, Tokoyami had learned after admitting to his entire class that the two of them were dating. There were many tears that night, but they already crossed that bridge. Somehow, it had even brought them closer. Crying tended to do that -especially with Midoriya.
"You sing as the birds would, Koji." Tokoyami whispered. "Your practice has paid off."
You do too! Kouda smiled, going in for a hug, but decided against it. They were still working on accepting contact. Your melody is dark, but beautiful, just like you. The last part was signed a little shyer.
"Thank you, My Love." Tokoyam whispered into Kouda's open palm, nuzzling his beak against the soft skin there. "Although my darkness may infect the corners of my mind, you have always been a melody to my heart."
Kouda blushed yet again. How do you always come up with poems like that? It's like you just think like that. He laughed to himself, shining his white teen in a wide smile
It was in times like these that Tokoyami found himself wondering how the rest of his class could look at this boy and not love him. Well, it was their loss. He was the one that got to enjoy the entirety of this angel. A light to his darkness, so polar yet perfect.
Author's Notes: This was a really cool suggestion and I tried to put order to my wondering thoughts about the dynamic of this ship, but couldn't really manage it.