Linky's Fics

Fun After Work

Fandom: 10 Things I Want To Do Before I Turn 40 (Manga)

Character(s) and/or Pairing(s): Keishi/Suzume

Rating: E

Word Count: 1805

Contents: PWP, Office Sex, Post-Canon, Established Relationship, Anal Sex, Oral Sex, Praise Kink, Kissing, Making Out

Notes: My Yuletide fic. It was a delight to revisit this manga. I was so excited to get this series, and I love these two. Originally posted on 12/25/2025.

Summary: Keishi offers to stay after work to clean up the office with Suzume, though in reality... he has other plans.

Also On: Ao3, Dreamwidth


Suzume-san’s eyebrows were just the cutest, always so expressive. Keishi loved everything about him, but this was an especially favorite part of his.

When he offered to the other coworkers that he and Suzume-san could clean up the office while everyone leaves, he looked surprised since this wasn’t planned in advance. Seeing his eyebrows accentuate his expression was simply adorable. However, given how serious he was about work he didn’t mind at all. This would be far from the first time he’d stay back to help clean up.

There was a reason Keishi wanted to do this though…

Ever since they started dating, the idea of having some form of sex in the office while everyone left had crept into his mind.

It was such an enticing concept. The lingering thought of how one might get caught if not careful. The act of fucking Suzume-san somewhere that during the day they had to be serious, the true nature of their relationship being hidden… It was all too exciting.

He still remembered how Suzume-san blushed furiously when he confessed this fantasy to him one night. To Keishi’s surprise, he did admit it sounded rather hot. Discovering all these sides to Suzume-san as they continued to date was always a treat.

Keishi loved every new layer he’d get to see that was deep inside his boyfriend. He wanted to discover each and every one, and indulge in them together. After all, he was going to turn thirty later this year anyways.

Suzume-san’s idea of having a list of things to accomplish before he turned forty had inspired him. Plus it was what brought the two together. He couldn’t help but give it a try for himself. So many memories had the potential to be made. Another way for the two of them to bond, and strengthen their relationship.

As the final sounds of footsteps could be heard as the door shut, Keishi had a gleam in his eye. Putting the stack of papers down, he embraced Suzume-san from behind. Exactly like that one fateful day. The day where everything had changed for the two of them.

“Keishi?” He looked up to him, confused. Though still melting into his arms. The gears soon began to turn in his head—and the blush that spread across his face was glorious. “Wait a minute…!”

“Tonight let’s cross an item off my list. What do you say, Suzume-san?” Taking off his frames and putting them into his pocket. He recently got his contacts just like he promised. Though he still liked the frames he’d always had. So he opted to keep wearing them.

With his new contacts, he would now be able to see every single reaction from Suzume-san tonight. A part of him looked forward to that more than anything else.

Meanwhile Suzume-san’s blush only continued to intensify.

“I’ll only do it if you want to, of course.” Keishi bent down and gently kissed his head. Running his fingers through his hair. Patiently waiting for his response.

Whatever Suzume-san wanted, he would go through with it.

A beat of silence, the red on his face only continued to grow. Then with a determined expression he turned around to look up at his boyfriend. “Let’s do it. …Just make sure we don’t create too much of a mess to clean up later!”

Keishi wouldn’t argue with that. The less mess there would be to clean up, the better.

Suzume-san got up and sat on his desk. There was an eagerness present within his eyes, and that only fueled Keishi’s fire even more. He’d make sure to give his boyfriend an encounter to remember and cherish for years to come. Only deserving nothing but the very best.

He started to kiss Suzume-san, slowly at first. But it didn’t take long for the heat to begin to rise. Letting his tongue make his way in, Suzume-san eagerly accepted it. Returning each and every kiss along the way.

Keishi wrapped his arms around him, while Suzume-san pulled at Keishi’s shirt. Making sure they could be as close as possible. Both of them didn’t want even a millimeter to separate them.

Then Keishi made his way down to Suzume-san’s neck. Undoing a couple shirt buttons to ensure there was more skin for him to show his love. He left no area unchecked, though was careful not to leave any marks. That can be for another time.

Suzume-san let out the most beautiful sighs and moans. It only egged on Keishi to continue, to show his undying affection for him. Smiling up against him with each and every kiss. He was so warm, and Keishi loved it. He could feel himself falling in love with Suzume-san all over again.

After a good few minutes of passionate kissing and light nipping, Keishi sunk down between his legs. Looking up with a smirk.

He unzipped his pants, and to Keishi’s delight Suzume-san was already half hard. For his next move he started to kiss his dick. He’d take his time to make sure he’d feel so, so good.

They had all night.

As his dick continued to harden in front of him, Keishi could feel his heart begin to race. He looked up to his boyfriend. Relishing in Suzume-san’s reactions. His soft gasps, and the blush painted across his cheeks. Not to mention how his eyebrows added to it all. Making it his expression go up to another level of cuteness.

The fact Keishi could see everything so clearly now with these contacts only increased his excitement. Grateful to have made the change, he would make sure to savor every moment of this.

“So cute.” Keishi muttered between kisses. Feeling his own pants tighten as he continued. His needs could wait though. There would be plenty of time for that later.

“You’re such a tease…” Suzume-san exhaled. Gripping Keishi’s hair as he begins to take him into his mouth. “Mm!”

It didn’t take long to get into a rhythm. Bobbing back and forth, gently sucking. Just as Keishi expected, each and every reaction from Suzume-san was wonderful. The way his eyelashes fluttered, his thighs jumped, the blush across his skin deepening…

He wanted to see what else he could coax out of him. Though he wanted him to last too—a blowjob wasn’t the only thing he had planned tonight.

“Feels… So good…” Suzume-san bit his lip, trying to suppress his moans.

Kissing up the shaft, Keishi looked up into his eyes. “Nobody is here. Feel free to be as loud as you want.” A kiss to his head before a swirl of the tongue, “In fact… I want to hear everything. Don’t hold back, Suzume-san.”

Given the reassurance, he allowed himself to moan out loud without fear. “K-Keishi—!”

Everything was perfect. The moans his boyfriend made, the thrill of doing this in the office with nobody else around.

A secret moment for only the two of them to enjoy and cherish.

After a few more sucks, Keishi stood up and kissed Suzume-san again. Unzipping his own pants as well. Getting lube and condoms from his pocket after an extra array of kisses and bites.

Suzume-san blushed again, but there was excitement coloring his eyes. “That’s so naughty of you.” His body trembled at the notion of Keishi having this on him in secret during the entire workday. While conversing with his coworkers, nobody would know what he would have had planned for once the day ended.

Nobody except Suzume-san that is.

Moving items on the desk to the side, he got into position and bent over. The air of the office was cold against the exposed skin for them both, though soon they would be enveloped in warmth and love.

Keishi could see Suzume-san shudder once he ripped the condom packet open and put it on. The two of them knew what was soon to come.

Keishi couldn’t wait much longer. His boyfriend surely felt the same too. By this point he knew him all too well. Able to see all these lovely little quirks of his. Having such an intimate knowledge of his boyfriend, and vice versa, it made everything even more special.

He gently prepared Suzume-san, coating his fingers in lube. As one digit, then two entered him. The sounds he made were like music to Keishi. He could feel his excitement during each passing second. Which only fueled his own even more.

Not wanting to take too long for both of their sakes, once Suzume-san was prepared he slowly entered him. Letting out a groan as his boyfriend enveloped him.

He was so tight and so hot. Not to mention it felt like the dangerous nature of what they were doing only made the sex even feel more amazing. And they only just started.

The sound of skin hitting skin began to fill the air of the office. What was normally such a serious environment being used for such a purpose… It was so thrilling to them both. Even more than they ever could have imagined.

“More Keishi! Mmh—”

Keishi’s fingers dug into his boyfriend’s hips, and he bent over to kiss the back of his neck. Whispering in his ear, “You’re so hot. And you’re doing so well for me.” Each word was imbued with the most sincerity.

Suzume-san whimpered from the praise, and a particularly hard thrust.

The fire in Keishi’s core only burned brighter. He truly loved Suzume-san so much. The age difference didn’t matter to him one bit. No matter how much Suzume-san called himself an “old man”.

To be able to give him this kind of pleasure was something he was truly grateful for, and would never take for granted.

“I’m so close…”

Kissing and nipping his ear, Keishi whispered. “You’ve been so good tonight. Come for me, Suzume-san. You’ve earned it.”

That extra praise pushed him over the edge, and he came with a groan.

After a few more thrusts Keishi came into the condom, shuddering against Suzume-san’s back with a pleased sigh.

The two stood there for a moment. Keishi was still inside him as they both came back to earth. He’d continue to gently kiss the back of Suzume-san’s neck with a pleased hum. Taking in their shared warmth. “That was amazing.”

“Mm. It was.” A few short moments of silence. “We should get to cleaning now.”

Keishi chuckled. He was far from surprised to hear that so soon. “Can’t we stay like this a bit longer? You’re so warm…” Embracing him from behind, arms tightening around him. Only making that warmth stronger.

“…Okay. Just promise me this.”

“Yes?”

Suzume-san inhaled. “Make sure you dispose of that condom somewhere outside of the building!” Blush rushed to his ears.

As always, he was just so cute. Smiling against his skin, Keishi gave him another kiss. “I will.”


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