Chuuya takes his costume and stomps into Dazai's bathroom, locking the door. He quickly changes out of his work clothes and into the costume. Upon putting on the shirt, he realizes it feels...odd.

He looks in the mirror and sees...

"DAZAI!!!!!"

Dazai goes up to the bathroom. He does not try to open it, but talks to Chuuya through the door. He speaks so sweetly it sounds fake.

"Whatever is the matter, Chuuya?"

Chuuya opens the door. He has not yet put in the fake teeth or the paws or ears.

"Really, Dazai? Was the midriff window really necessary?"

Dazai smiles and wraps his arms around Chuuya, drawing circles with his finger on the redhead's exposed skin.

"You have such exquisite stature, Chuuya. It must be shown to the world!"

Chuuya seethes in the man's arms.

"It's a good thing I have my scythe, though! You look so good in that, I'll bet some people will flock over to you in adoration! But they should know that you're all mine. Ufufu~"

Chuuya punches Dazai's arm as he blushes. "Just shut up and go put your damn costume on, you dirtbag."

~

Dazai exits his bedroom, now draped in purple and black. He gripped his scythe in his hand and looked...uncomfortable.

"Oi, you done yet, shitty Da--"

Chuuya's eyes meet Dazai's, and he instantly becomes enamored. He whistles.

"What was that?"

"Were-wolf whistle, of course."

Dazai tries to not laugh, but lets it out anyway.

~

Chuuya steps closer to Dazai, now smirking. He leans forward and presses his chest against his.

"So, unhappy about your costume, huh?"

Dazai meets his gaze. He feels a ripple cascade in his chest cavity, and it's hard to maintain eye contact.

"Yeah."

Chuuya slips a hand (he was yet to adorn the fake paws; the ears were on, though) in between the torn strands of Dazai's shirt and rests it on his bandaged clavicle.

"Well, I think you look absolutely delicious."

Dazai's heart pounds. He swallows and musters a smirk.

"Delicious, hm? What a perfect mood for the season of candy~"

"I'd say so."

Chuuya pushes Dazai against a closed door and leans closer.

"Say, shinigami-sama, how much time to I have left?"

The redhead toys with the strands of the taller man's shirt.

Dazai bares his teeth formidably. "Not much. I'd say you should make every second count~"

"Hm, that so?"

Chuuya slowly grinds his waist against Dazai's.

"Well, we have a party to go to. Will I survive that long?"

Dazai sighs at the taunt.

"Sure, but I don't think I will."

Chuuya laughs and steps back. "You said it yourself, Dazai. Not until after the party."

The brunette groans and the redhead smirks.

"But hey, that gives you something to look forward to..."

He runs a finger up Dazai's arm.

"...right?"

Dazai flashes Chuuya a smirk.

"Fufu, right. Now, let us go to the party, shall we?"

~

Whilst at the party, the two indulge in sweets.

Chuuya, having already drank a glass of wine, messily savors a piece of chocolate, Dazai staring at him admirably.

"Fufu~"

Chuuya looks up upon hearing that familiar laugh, swallowing the chocolate. "What do you want?"

Dazai smiles. "You've got some chocolate on your face. You're so cute~"

Before letting Chuuya respond, Dazai leans in and licks the dribble of chocolate from Chuuya's lips, licking his own lips afterward.

He savors Chuuya's flustered expression, Man, he really is the cutest.

"I don't know what tastes sweeter: the chocolate or you."

And Dazai pulls his partner in for another kiss.

~

Dazai sits near him and tilts his head. "What's up, Chuuya? Why aren't you enjoying these Falltime Festivities?"

Chuuya sneers. "Festivities? This party sucks ass. Your coworkers wouldn't know fun if it hit them in the face."

Dazai scowls a little. "Oh, come now. You're just not used to this because you've grown accustomed to mafia mixers."

Chuuya raises an eyebrow. "Don't tell me you're actually having fun here?"

"...in my defense, I spent most of my life going to those mafia mixers."

That was enough of an answer for Chuuya to realize the feeling was mutual.

Dazai suddenly smirks. "Wait. Don't tell me...you're trying to hide your costume?"

Chuuya groans.

"Come on, Chuuya, it's a Halloween costume. Don't be ashamed~"

"Don't be ashamed? I'm being forced to wear a shirt that doesn't even cover half my chest that's so fakely torn it's stupid."

"Ah, but I didn't force you to wear it, now did I? Did I not pick out multiple costumes for my dearest hatrack if he didn't like that one?"

Chuuya's silent.

"Well, I think you look really, really good in that. Ufufu~"

Chuuya neets Dazai's gaze again and recognizes the grin he wears. The grin he makes when he wants to...

Chuuya shivers and aggressively pushes Dazai's hand off of his thigh. "D-Dazai, not here, not here. Not in front of all your coworkers."

Dazai feigns a look of innocence. "Whatever do you mean, Chuuya?"

Chuuya scoffs so hard it's almost a laugh. "Please. I recognize that...that...what's the word..."

Knowing Chuuya so well was quite the benefit to Dazai, especially in this situation.

He finishes Chuuya's sentence.

"Prurient?"

"Yes, prurient. I recognize that prurient smile on your face from anywhere. Speaking of, you're seriously getting this way because of my costume??"

"Yes. You let me pick it out. I know exactly what outfits could highlight all your assets, Chuuya~"

Chuuya sighs again. He feels Dazai, not getting the hint, place his hand on Chuuya's thigh once more. It achingly slowly moves upward. It's so maddeningly slow, Chuuya just wants to pull Dazai in and kiss him senseless and get it out of his system.

But he has to keep reminding himself, not here. Not in front of his co-workers.

"H-how long do we have to stay here?"

Dazai looks up at the clock. "Well, the party ends at midnight. When I see the first person leave, I think that's a good time for us to do so, as well."

"What time is it now?"

"10:22."

"Fuck."

"Why the rush, Chuuya? Is it just because you aren't enjoying the party?"

Dazai leans forward and runs his hand further up Chuuya's thigh, slipping his middle finger into a hole towards the tip, feeling the smallest, most taunting bit of his lover's skin. It is tantalizing. And not just for him.

"Or, perhaps, is there...something else you want, upon our exit?"

Chuuya uses everything in his power to not shudder from Dazai's touch or low tone.

He swallows.

"Keep it in your pants, shitty Dazai. We're still here. Wait till we get home before you get all excited."

He leans in and smirks at him.

"I'll be sure to quell that excitement of yours, though, once we do leave. Does it not give you something to look forward to? Just hold on longer, Osamu."

And he laughs.