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This new colour-changing lipstick sounds interesting on its own, but the promise of tasting it directly off of Asmo's mouth is even more appealing. You don't need further convincing to pause your studying and go see him.
You don't even have to knock. The door swings open as soon as you stop in front of it, as if Asmo could sense your approach. Maybe he can, with the lustful thoughts his message had caused. He grins wide at the sight of you standing in the hall.
"Come in, darling~! Let's see what colour it'll be on you," he says, already armed with the lipstick in hand. He doesn't wait before pulling you inside with a tight grip on your wrist. You follow his gentle pushing backwards to sit on the edge of his bed.
In its tube, the lipstick looks like nothing more than a generic pink. Not too bright, entirely un-sparkly like Asmo's usual preferences, and suitable for daily wear on an average range of skin tones. On Asmo's own lips, it appears orangey-pink, like the sunset in summer.
You stare at his mouth for a beat too long. Long enough that you see how the colour deepens before your very eyes, turning pinker until it's more red than orange. You tear your gaze away to see his cheeks dusting a similar shade, and that's when you realize how close your faces are.
"Asmo," you murmur as he cups your cheek and tilts your face up towards himself. He presses lightly on your lower lip with a perfectly-manicured nail, and your lips part almost mindlessly for him.
He hums in response, his attention focused on carefully applying the lipstick. You try to keep still, but the sweet scent of his perfume clouds your mind like a flowery aphrodisiac. Combined with his knee pressing into the mattress between your thighs to better support himself, you have no hope for your self-control.
Finally, after what feels like an eternity, he pulls away and hands you a hand mirror. "What do you think?" he asks, excitement evident in the brightness of his voice. "It's so pretty on you~ Pretty and pink!"
"So we're matching?" you ask, examining your reflection. He's right—the colour is deep pink on your lips, and you watch it darken as he settles himself atop your lap and wraps his arms around your neck. Your own hand hovers over his lower back instinctively, keeping him steady. "It's based on body temperature, right?" you ask, setting the mirror down.
He nods, his eyes flickering down to your mouth. You lick your lips and watch his lipstick get so pink it might as well be red. "Body temperature," he confirms, shifting in your lap. "Is mine still orange?"
"No," you murmur, lowering your gaze to his lips, "it's… red. Are you feeling hot, Asmo?" You watch his expression falter, his confidence wavering in a way that only you can cause. "Hey, you said it's flavoured, right?"
"Poison strawberry," he breathes, leaning closer until his chest is pressed right up against yours. You squeeze his waist and bite back a little smile as he tilts his head just so. "Do you want to—"
"Yes," you interrupt. "I want to taste. You said I could, right?" One of your hands slides up to curl around the back of his neck. "Please, Asmo? Can I taste it?" Your lips brush together with every breath, and you swear you can smell the sweet berry flavour in the tiny space between you both.
He giggles in response, the sound going straight to your head like it always does. "Of course, darling~!" he answers, already pressing little kisses all around your lips. "You don't need to ask to kiss me, you know that—"
You cut him off again, this time with your mouth. He doesn't seem to mind, though, judging by the gasp he lets out against your lips and the way he melts into the kiss, entirely unresistant.
It's Asmo, after all. Did you expect him to push you away when all he ever thinks about is being with you?