cringe sunny/mari smut

>The whole group is watching a movie in Sunny’s living room
>They’ve all seen it before, so they’re only half watching, making idle chatter all the while
>Mari, who is huddled up next to Hero at the foot of the sofa, notices that Sunny is being very quiet, quieter than usual anyway
>She glances behind her at Sunny
>Immediately notices he has a boner
>Like, a full-on raging erection, very prominent through his shorts
>The others haven’t noticed yet, and he’s trying not to draw attention to himself
>Sunny meets Mari’s eyes and shares a brief, knowing look with her before looking away quickly
>Mari excuses herself and Sunny, takes his hand, and leads him up the stairs to their shared bedroom
>She locks the door behind them. The others are none the wiser to the true nature of their frequent “alone time” but she doesn’t want to risk it
>Mari sits on the bed sets Sunny in her lap
>They stay like that for a minute, Mari lovingly caressing Sunny’s hair, before she asks
>”So why did it happen?”
>Sunny stays silent
>”Was it because Basil was sitting really close to you?”

>Sunny remains silent, but the slight shift in his body language speaks louder than words, she hit the nail on the head
>Mari couldn’t help but smile a little to herself, but she doesn’t press him on it any further
>”Well, why don’t we do something about it, hm?”
>She brings her hand over the tent in Sunny’s shorts
>She’s barely applying any pressure at all yet but Sunny is already squirming
>Before she can begin, her brother says something, inaudible at first before he repeats himself
>”The others are still in the living room…”
>”You don’t want them to see you like this, do you?”
>Sunny shakes his head ever so slightly
>Mari hums in affirmation. “Then just relax and let big sister take care of you for a  bit, okay?”
>Sunny is already too horny to think properly, and the way she’s whispering into his ear is driving him crazy
>He gives in, fully relaxing into Mari’s embrace as she giggles lightly
>Mari tugs at the waistband of his shorts, prompting him to lift himself a bit so he can remove them, along with his underwear
>Sunny’s dick was still completely hard, with a bead of precum on the tip
>Mari smeared it around the rest of his length before beginning to stroke him
>She didn’t grip him very hard or go very fast, but Sunny was bucking his hips into her hand
>Mari giggled to herself again. Her brother was so needy, it was adorable
>She decided to treat him by removing her other hand from his hair and moving it under her shirt, fingering his nipple
>Sunny thrusted forward suddenly, nearly crying out but managing to hold himself back
>It was almost overwhelming, not just the feeling of Mari’s hands on him but the feeling of her all around him
>They had done this a few times before, but never like this
>He’d never been so close to her, with his head laying on her chest, he could her heartbeat, feel how warm she was…
>Sunny could feel himself about to be driven over the edge. He whimpered his sister’s name in between his heavy breaths
>She shushed him and whispered into his ear, “Shh… it’s okay, just let it out.”
>Sunny’s mind went blank for several moments as he came harder than he ever had in his life
>The first spurt landed on the floor in front of him, the rest dribbled onto his leg
>Mari continued to stroke him until he was completely spent, milking him dry completely
>When Sunny was finished, she got up from the bed and retrieved the box of tissues on her nightstand, put there for this very occasion
>Sunny watched Mari clean up with fondness in his eyes. She was so pretty… he was lucky to have a sister like her
>When Mari was done, she put the tissues in the bin, pulled Sunny’s bottoms up for him (he had forgotten to do so in his daze), and gently took his hand, leading him out of their bedroom
>She looked down at Sunny and smiled. She loved her brother so much.