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Amane knew he was in for some sort of trouble when Tsukasa had asked if they could stop and get popsicles on their way home. It wasn't an out-of-the-way request, especially not with how hot it had been recently; it made their clothes stick and pull, and pinked both their cheeks on the walk home.
What set him on edge was the way Tsukasa had twisted, head pillowed on Amane's lap as they hid in the back of the library where it was marginally cooler, and blinked big amber eyes as he asked his question.
His twin never attempted to look so innocent unless there was something truly sinful simmering in that devious mind. And he should have said no as Tsukasa took his wrist and dragged them into the woods with blue popsicles already starting to melt. Should have turned back for the road and the tiny bell over the shop door and headed straight home.
Instead, his back was pressed to the rough bark of a tree, sticky sweetness dripping down his fingers as he kept his eyes on Tsukasa and the magic things he was doing with his tongue.
Amane wasn't sure when Tsukasa had undone his belt or pushed his shirt up, could only focus on that cold mouth pressed against his belly before it pulled away.
He whimpered, clutching the melting popsicle in his fist as his knees trembled, eyes following the lewd movements of Tsukasa’s pink tongue. It chased a slow stripe from base to tip, darting out to flick at the top and catch the glittering moisture there.
Then, Tsukasa mouthed down the length in his hands, Amane’s breath coming in short gasps before his brother smirked and slid the whole thing between his lips.
The moan his brother made seemed to echo through the woods, and Amane dropped his popsicle, half-eaten and mostly melted, so he could clamp his hands over his own mouth to stifle himself.
Tsukasa peered up at him through thick lashes, letting them flutter shut over his burning eyes as he worked his mouth around his treat before Amane couldn't take it and attempted to drag him away.
He wasn't expecting Tsukasa to snap forward and pin him to the tree, one sticky hand pressed to the scorching skin of his belly while the other tightened as his tongue snaked from his fingers to the tip.
"I'm not done yet, Amane. Just a minute okay...or did you want to taste?"
Amane's stuttered gasp was lost as Tsukasa bounced to his feet, slotting their lips together before he parted them. Their shared moan was muffled, heat and cold twisting together, and Tsukasa’s tongue so sweet as Amane sucked on it as his brother shuttered.
A soft thump at their feet had them parting, and the popsicle Tsukasa had been teasing as if it was Amane's cock lay on the grass in blue glittering pieces.
"Oh...I wanted to finish that."
Tsukasa’s soft pout was too much, the sticky sweetness too tempting as Amane drew his brother's attention back to himself and ran his tongue up the dripping lines that had traced down the edges of Tsukasa’s mouth.
"I'll buy you another tomorrow," Amane panted as Tsukasa rocked against him, "we'll get another and finish them, and then-"
His sentence was lost in a cry as Tsukasa shoved his pants and underwear down and dropped to his knees, sealing his lips around Amane's hard, dripping cock and wasting no time recreating every movement he'd performed on the popsicle melting into a puddle beside them.
He lapped at the slit, catching the precum on his tongue before bobbing down the length; each twist of his tongue and brush of his teeth made Amane’s hips jerk. He buried his hands in Tsukasa's hair, warm and damp from both the heat of the day and their illicit activities, and thrust gently into the wetness of Tsukasa’s throat.
"When...when we get home... I'm gonna, hnnn...Just like that Tsu, faster," Amane watched as every dip of his brother’s head had his nose brushing against skin, the soft spasms of his throat squeezing him towards completion, "I'm gonna pin you to the floor of the bathtub and fuck you until- Fuck!-"
Tsukasa yanked his hips forward, swallowing and choking as Amane came abruptly but didn't pull away until soft hands gently touched his cheeks. Amane winced as his dick twitched as he looked at Tsukasa's flushed face; spit and cum had followed the sticky lines the sugar of his popsicle had left, and Amane crouched down to lick them up.
He fumbled with Tsukasa's belt until he could get his hand inside, withdrawing quickly to get his palm damp before he shoved it back down Tsukasa's pants and started to jerk him off.
The only thing Amane could hear was his brother’s sweet cries, the broken syllables of his name twisted in the barely-there breeze as Tsukasa rolled his hips.
He glanced around quickly before he pushed Tsu down, freeing his cock and curling his fingers tight at the base so he couldn't come. Tsukasa's legs kicked around him, his hands fisting so his nails bit into Amane’s shoulder as his hips worked uselessly to find friction.
"Tsukasa."
His twin looked up at him through hazy eyes, and Amane’s breath caught in his chest. Sunlight dappled Tsukasa's pale, flushed skin; his eyes, so usually narrowed in mischief, were wide and shiny like burnished gold.
Here was everything that Amane had ever loved most; more than the moon, the stars, that feeling he chased that whispered of home and comfort and love.
He leaned down, setting feather-light kisses over Tsukasa’s jaw before he captured his lips in a kiss far sweeter than their popsicles.
"When we get home, I'm gonna lay you down and love you right, Tsukasa. From the top of your head to the tip of your toes, until all you know is me."
Amane resumed the quick motions of his hand, watching with delight as Tsukasa arched up as his thighs tensed, and dipped his head to suck his brother off as he came.
They were already sweaty and filthy, and having to walk home in clinging cum-stained pants was the worst.
Amane tucked Tsukasa back into his pants, doing up his belt and forgoing tucking his shirt in before he set himself right. He was half-hard from getting Tsukasa off, but that would be taken care of soon enough as he yanked his pants up and buttoned them.
The air was forced from his lungs as his brother tackled him, nuzzling against his throat before he flopped bonelessly to cuddle into his side. Amane curled his arm around Tsukasa’s shoulders, pressing a kiss to his forehead before he let his eyes fall shut.
He could feel the warmth from the sun and Tsukasa’s weight sinking into him, making him even drowsier in the afterglow of his orgasm.
"Hey, Amane?"
He hummed softly, giggling as Tsukasa’s fingers brushed against the ticklish spot below his ribs.
"You said you were gonna love me when we get home. Can you still fuck me in the shower first?"
The haze of sleep burned away as lust ignited in his belly, the quick rut of Tsukasa’s hips against his thigh making him dizzy as blood rushed south.
Amane wasted no time yanking them both to their feet, kissing Tsukasa hard as they both dusted each other off and grabbed their bags. He paused as Tsukasa threaded their fingers together, tipping his head for a kiss Amane was more than happy to give.
"I love you, Amane."
"I love you too, Tsukasa."
A warmth that had nothing to do with the overwhelming heat of the day tumbled through his limbs, and he tugged Tsukasa into a crushing hug before his brother thrust their hips together with a coy smirk and they both took off for home and the promise of more pleasure and a cool bath.
("Tsukasa! Why didn't you tell me that I had the popsicle stick in my hair!"
"I was too busy trying to get your stick up my ass...wait Amane; what are you doing with the showerhead? Wait! Eeeeeee! It's cold!")