(Idk why this seems so popular but buckle in kids)

It was around the end of the war seemingly. You and Byleth have grown closer through working together both in battle and in times of rest. He was reserved, stone faced, and aloof but for some reason you and him seemed to connect well.

"Has anyone seen Byleth?" You ask the council members as you stand up from the meeting table. Everyone shook their heads

"I thought you would have known.. or maybe he wasn't feeling well.." Cyril thought aloud.

"Well, I guess it doesn't matter. I'll find him and update him on our plans." You smile and leave the room to find him.

Later you see Byleth coming back from the cemetery. "Byleth!" You call happily running to his side he turned and gave you a surprised expression.

"Ah.. hello." He greeted simply making you furrow your eyebrows.

"What's with that reaction?" You laugh.

"Oh, don't misunderstand me I just... wasn't expecting to see you this soon." He said. Now you were more confused and it started to show on your face "... I guess there is something I need to tell you." He takes a breath, your silent reply let's him know you're ready to listen. "I've done a lot of thinking.. and I'm not sure what will become of me when this war comes to an end. You have been a treasured ally to me, and.. I want you to have this." He held out a ring, with beautiful light colored stones and a silver band.

"B-Byleth.. this.." you were so surprised you could hardly speak.

"I love you. I want to spend the rest of my life with you. You're funny, sweet, I can really be myself with you. Reject me if your heart lies with someone else but-"

"YES!" You shout and wrap your arms around his neck "Yes! I want to be with you." You cry happy tears burying your face in his neck, his arms around your waist holding you close. Letting go, he put your new ring on your finger. "It's beautiful.. I love you." You say looking up at him smiling.

"I love you too." He said reaching down and kissing your lips. His lips were warm and soft. You cup his face to keep him there and kiss him with a slow rhythm. He hummed in response to your soft kisses before breaking away and smiling happily. "..You've made me the happiest man alive."

Time passed. And the war was finally over, you and Byleth we're finally wed. Times of peace waved over the land, however Byleth was extremely busy now. One night he came back from a busy day.

"Welcome back." You greet from your bed. You were just re-reading one of your favorite stories. Utterly exhausted, he took off his shoes and crawled on you, resting his head on your chest.

"Mmmmmmmm." He rumbled lowly as you held his head laughing a bit.

"Long day?" You ask petting his long green hair. He nodded a bit in response. "..I missed you." You say kissing his head. Byleth looked up and brought his face even with yours.

"I'm sorry I haven't had time to be with you... everyone seems to be counting on me now.." he sighed "though it's an honor it can be a burden."

"I understand completely." You smile "you are meant for greatness, and you're doing great things. I'm proud of you."

"...."

"....."

Byleth kisses you deeply taking you by surprise. "Mmh-!" You hum a bit as a reflex. He licked your bottom lip, and wiggled his tongue to meet with yours. "M-mmn~" you slowly begin to melt into his kisses. The sensation of his warm tongue in your mouth made your face heat up. He broke away and worked his kisses down to your neck and began to unbutton your shirt. This was all happening so fast, you felt nervous as you gripped onto the back of his shirt looking for some kind of stability.

"Are you scared?" He asked in a low tone, continuing to suck at your neck.

"U-um.. it's nothing.." you stutter not knowing how to feel. He raised his head to look at you again.

"... your face is all red." He teased making you look away. "I've wanted to make love to you for awhile you know." He continued to tease you making you roll your eyes ".. truly, I love you, I want to make up for all the times you've felt like I wasn't present for you." He said kissing your cheek. You turn your head back to him as he takes off his shirt and belt before kissing your neck again. You feel his cold hands slide behind you and begin to claw at your clasp. Eventually it comes off and he moves to lick your breasts and reach under your skirt to rub you.

"Mm..Byleth~" you call out as he continues to lick your breasts, lightly biting them here and there. You feel yourself soak through your panties and spread your legs more for him. Byleth's smile against your skin gives you goose bumps as he takes off your panties to rub your entrance. Before he does so he runs his thumb against your lower lip, opening your jaw to stick his two fingers in. "Ahg- ahh." You try to back away but he swirls his fingers around your tongue. You cave and run your tongue up and down his fingers making them wet.

"What a good girl you are." He smiled pulling his fingers away and pecking your lips before sliding his fingers into you.

"A- mmhn-" you choke back your voice as he slides them slowly deeper into you. You chest rising and falling as you take deep breaths trying to stay calm. Instead of sliding out. Byleth wiggles his fingers making you bite your lower lip.

"I want to hear your voice." He cooed. You open your mouth in protest but as soon as you do so he shoves deeper into you causing you to moan loudly.

"Ahh~! W-wait.. Mmn~" you try to get his attention between moans and hot breaths but he doesn't show signs of letting up. "H-hey..! Ah-". Hearing you he finally removed his fingers.

"Hm?". You reach for the band of his underwear, tugging at it slightly.

"I.. um.. I want you inside of me." You say shyly making him smirk a little bit before kissing you gently on the lips. He began to take off his boxers, so you slide off your skirt. Byleth had a painfully stiff erection, he turned you over onto your hands and knees and kissed your shoulders. "Mm~.. a-AHH-!" You choke out a moan when you feel his hot dick penetrate your entrance, pushing you open. You could feel yourself stiffen up as he slid further in. You grip onto your bed sheets as he stops for a moment trying to catch his breath. He leans down to your ear.

"I'm.. sorry, I'm trying to be gentle.. hah.." he breathes, then kisses the back of your neck making you whimper "Ahh.. but you're so cute like this..." he says to himself as he pushes into you a little forcefully.

"AHH- BYL-GNN!" You cry you. You muffle your voice by gathering the sheets and pressing it against your mouth as he began to move more fluidly in and out of you. "I-I'm.. Byleth-!" You try to speak but it's pointless. You shudder, feeling yourself coming over him making him flinch a bit at the feeling. He pauses a moment before moving in you again, letting out a grunt every time your hips met. You felt like you were overheating, like you couldn't take anymore as your voice cried out for more of him. It wasn't long before you felt him come inside of you with one last plunge into your hips. You could feel your high slowly come down, and the pain in your hips became undeniable. He pulled out of you with a jerk making you flinch a little.

"..you're so cute." He smiled as he flopped onto his back beside you. You crawl over a little bit to lay on his chest. Byleth ran his fingers through your hair while you listened to his heart beat.

"I love you." You say leaving a small kiss on his chest. you don't see it, but you know that he's smiling.

"Really?" .. well that wasn't the response you wanted. You raise your head and see his teasing grin.

"You know, you're lucky you're so adorable." You say it seriously, but really you're just teasing him back making him laugh a little bit.

(Haha y'all it's hard to like. Give a character who doesn't really speak a lot of dialogue so I'm sorry if this sucks 😂 love y'all)