Chapter Text
It started with oral fixation. Izaya began to put things in his mouth, random things like lollipops and pens and chopsticks, until Shizuo began to notice that there was something in his mouth all the time. Even during their fights, Izaya toyed with the knife to his lips, licking the tip just carefully enough to avoid incision, or brought his hand up so that his teeth could toy with the rings that adorned a few of his fingers.
At lunch, though they never sat together, Shizuo would catch himself looking over at the raven, who had his lips around the straw of an empty juice box and then noticed the young blond staring, and grinned cheekily, teeth still grazing the tip. His tongue was the most bold, taking much longer to wrap around the end of his chopsticks when he finished off a piece of sushi.
Damn that flea.
When Shinra suggested one day after school that they all go out for ice cream, Shizuo knew he was doomed.
Kadota ordered coffee, Shinra took rocky road, Izaya had french vanilla, and Shizuo, not wanting to order the same, got strawberry. As they walked back to Sunshine, which was where they all usually split off, Shizuo's gaze kept drifting over to Izaya, more specifically his mouth, and the way his tongue curled around the melting edges—
Dammit dammit dammit dammit dammit
But even then he couldn't stop staring, seeing the white cream smudge on the corner of his mouth and other white things—
"Fuck you," he said suddenly.
"Shizuo!" Shinra yelped.
Kadota chuckled.
Izaya cut the theatrics he was wont to pull at a time like this and simply said one of those things that usually not only threw Shizuo off the tracks but derailed the train and sent it over a cliff entirely.
"So I hear you're still a virgin, Shizu-chan."
Shizuo's hand was clamped on his own mouth in an instant. His face started to turn the color of his ice cream.
"Izaya," Shinra groaned. "We can't all be whores."
"Yeah, you run along to your girl and make a pass, see what she does. Seriously, though!" Izaya stepped, or skipped, around in front of Shizuo and gestured his body to the others. "How's a hunk of hot stuff like him never had so much as a kiss?"
"Like Shinra said. Can't all be whores."
"Bet you'd like fucking me."
"If this ice cream wasn't so good I'd smash it in your face."
"You'd like that, wouldn't you? Licking it off~"
"Shut it, flea–"
"Saving my lips for last~"
Shizuo was ready with another retort but it died when Izaya made a long and rather pornographic show of licking his ice cream from cone to tip. His small moan managed to be wanton enough that he wondered if it was real.
"Fuck you," Shizuo repeated.
"I see we've finally come to an understanding."
They finally reached Sunshine 60 without argument. Kadota parted with his friends, and Shinra made his way down to his place. Izaya still had a long walk to go back to Shinjuku, but as Shizuo tried to leave, the raven grabbed his arm and leaned in close.
"Are you free tonight?"
"Not when you’re involved."
"If it’s homework, I’ll be glad to help~"
"I don’t do guys."
"Oh Shizu-chan, I can be anything you want me to be."
His lips suddenly brushed Shizuo’s earlobe, giving him goosebumps. His whisper was electrifying against his skin.
"Parents are away, sisters are at a sleepover. Nine pm. You know where I live~"
And just like that, Izaya was gone.
What scared Shizuo the most was that he was actually starting to consider his offer.