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Shuichi knew he should've never tried this. The way he was cornered against the wall by the shorter man was only proof of that. But it was far too late at this point.
Kokichi's hands were bunched in the fabric of Shuichi's uniform and he stood on his toes to speak directly into Shuichi's ear.
"Decided to follow me, huh?” Shuichi swallowed roughly, feeling utterly helpless as his poor attempt at surveillance was discovered.
“Now you’re not gonna say anything? Are you toying with me, Shumai?”
All he needed to do was say the right things—then he’d be able to leave without much issue. “N-no, I’m not…”
It was a knife to his neck, the way Kokichi closed in on him so naturally. He was now pinned to the wall by the entirety of the other’s body, an unspoken heat passing between the two of them.
“Hmm, that must be it,” Kokichi mused, mostly to himself as he kept Shuichi trapped. “I know you didn’t follow me for nothing—you’re way smarter than that.”
The next words, Kokichi murmured into his neck. "Can I see it?" He dragged his finger around the shell of Shuichi’s ear and down his jaw.
"Wha—??"
“That’s what you’ve been following me for, yeah?” he prompted, reaching down to poke at Shuichi’s crotch. “So, can I see it?” He continued circling his finger around, blood gathering quickly beneath Shuichi’s slacks.
It was night and day, the way Kokichi’s disposition changed in a matter of seconds. He was used to this part of the phantom thief’s tendencies by now, but it still caught Shuichi off guard. He moved his lips in attempt to respond, but he couldn’t get any sound to come out.
“Well, if you’re not gonna say anything, I suppose I’ll just…” Kokichi’s grip loosened slightly and his finger stopped moving. He had a slightly forlorn expression on his face, as if he wanted to keep going.
“W-Wait—” Shuichi swallowed and turned his face to the side, a flush fading onto his features. He could hardly keep track of what was happening anymore, but he couldn’t stand the thought of Kokichi leaving. Especially not now, as he was already flustered. “Could you… uh. Y’know?”
A hint of something dangerous flickered to life in Kokichi’s eyes, and he closed in once more.
“Silly detective,“ he murmured.
“…”
Shuichi couldn’t help but feel that was just a simple tease, even as Kokichi considered him for a silent moment more.
Finally, he graced Shuichi with a reply, “I’ll give you what you want since you asked so nicely.”
It was an imprudent wish, given their positions, but maybe he could let the phantom thief in for a little while.
He knew what would happen next, but he was still moderately surprised when Kokichi knelt down in front of him.
“Mm, I bet it’s pretty,” Kokichi mumbled quietly to himself as he worked Shuichi’s slacks down, though it was loud enough in the vacant room they found themselves in. “Have I told you how pretty you are?”
“You… haven’t.”
“Well, you are.”
Did he really think so? Even if it was a lie, some part of him wanted to believe it.
Kokichi pulled Shuichi’s length out, staring at it impressedly. If he didn’t know better, Shuichi might mistake his gaze for admiring.
"Hey, I was right…" he said, voice lifting at the end and evading capture.
"Eh?" Shuichi could hardly hope to say anything; this entire exchange was already making him dizzy. Not to mention how urgently his head was pounding.
"Now, try to stay quiet, won't you?" Kokichi demanded, voice going shockingly serious. Leaning forward, he flicked his tongue out and pressed it just beneath Shuichi’s flushed tip. Up and off.
Lick.
Shuichi sucked a slow breath in then exhaled. It took all the sense he had left to stay on his feet and keep quiet.
Lick.
He brought one hand down, his fingers threading instinctively into Kokichi’s hair. It was soft enough to have his mind filing that away, despite his best interest.
Lick.
He pressed the other hand to his mouth and looked away. Kokichi’s breath was warm but his touch was so delicate, so teasing.
Lick.
Still buried in Kokichi’s hair, his fingers twitched uselessly. God, he shouldn't be doing this. Especially with how good it felt—it was too risky.
Lick.
Against his better judgement, a broken whimper slipped past his lips. Kokichi’s lips ticked upwards.
Lick.
“Man, you really like this, don’t you, Shumai?”
Shuichi said nothing, instead exhaling shakily. What was there to say? This all meant nothing in the end—it was the remembering that was hardest. He couldn't let himself get attached to this, no matter how good it was.
“Don’t worry, I like it too.”
Kokichi leaned back in and planted a loud, overdone kiss to his tip. A surprised noise came out of Shuichi’s mouth before he could think otherwise.
He was given no room to think before Kokichi returned his attention to the weeping length in front of him.
Lick.
He half expected the sensation to come again, but he was instead met with all-encompassing warmth as Kokichi wrapped his lips fully around the head, taking him in deeper. Letting out a quiet groan, he squeezed his eyes shut.
His ears were attuned to every slight noise in the room, including the wet sound of Kokichi sliding farther down his length.
“That’s—mgh. Just like that.” he sighed. His fingers curled deeper in Kokichi’s hair. Before he knew it, Kokichi pulled off, leaving him on a steep dropoff.
“Y’know, I like you better when you’re honest. So keep talking.”
“Uh…” Now he was self conscious, not daring to say another word as Kokichi picked back up teasing at his tip.
Then, just a moment later, he guided Shuichi’s cock back into his mouth. Kokichi never took him in completely, but it was still driving him wild.
"Kokichi, I—"
He pulled off with a pop, his teeth shining with an amused grin.
“Hang on, I’ve got a better idea,” he said as he started to work his hand firmly around Shuichi. His voice dropped to a whisper. “I know you're close, so let’s see it.”
Kokichi continued stroking Shuichi like this was the only thing keeping them together. In a way, it was. He drew in some air, his breath wavering into a whine.
The feeling took over his senses, his body locking up as he finished. As he twitched uselessly, his cock spurted straight into Kokichi’s mouth. White droplets fell down onto his pink tongue and his lashes fluttered shut. Kokichi’s hand worked diligently, milking every drop he could out of Shuichi. It was all so messy, so imprecise. A final string fell into his mouth and Shuichi’s fingers twitched in Kokichi’s hair.
Maybe it was the rush talking, but Kokichi looked good like this—he was grinning as he closed his mouth and swallowed it all down eagerly.
“We should do this more often, Shumai,” he giggled, dragging his thumb over his tip to catch the final drops and bringing it to his mouth. “But I’ve gotta go for real this time.”
Right.
“Y-yeah, got it.” This all meant nothing in the end, and as he righted himself, the thought caught up to him.
“Oh, and next time?” Next time, huh? He couldn’t trust that, even if he wanted it.
“Hm?”
“Make sure I don’t see you while you’re trying to ‘spy’ on me. It’s too cute when you think you’re doing a good job.”
Kokichi turned and walked off casually. Like it hadn't happened in the first place.
He should've expected that.