I was listening to Kise's seiyuu in Diabolik Lover and then I started thinking about Kasamatsu's eyes… this is what came out of it. I know it ends quite abruptly, but that's as far as my mind would go.
I think both of them aren't quite right in the head in this one
In the dimmed light of the early evening they were standing in the entryway, facing the mirror. They had just come back home and were in the act of taking off their coats when Kise had hugged Kasamatsu from behind.
They stayed like that, as seconds ticked by slowly turning into minutes, both seemingly contented in studying their reflections and the way the taller frame enveloped the smaller one.
The silence was finally broken by Kise. "Senpai, your eyes look like diluted ink." His voice was full of wonder, as if that was the first time he was truly noticing the other's eye color. "There's a blue tint to them."
"I know"
Arms crossed in front of Kasamatsu's body, with his hands firmly resting on his hips, Kise's eyes were full of mirth. "A bit like Aominecchi's and Kurokocchi's!"
A short silence followed and then Kasamatsu reached behind with a hand to brush away the fringe of shiny blond hair falling in front of honey colored eyes.
"Akashi's left eye looks a bit like yours"
"mmmh… maybe. Do you like my eyes, senpai?"
"I do"
"I like yours too!" Kise smiled at the other, voice brimming with enthusiasm.
"Wouldn't it be cute if we matched? Like, couple shirts or matching scarfs and accessories! All those things cute couples do!"
The mirror reflected curious dark eyes looking up to his.
"Oh, don't worry. I do love senpai's eyes very much, so it's not like we'd have to gouge them out!" He added hurriedly, looking incredibly sad at the thought. Then his smile came back at full force. The glow in his eyes shining even brighter than before.
"We can buy colored contacts! Same color as my eyes. I think they would look good on senpai. You would look like a cat, a black cat!"
Kise's right hand traveled up the other's body, going from his left hip to the neck, encircling it emphatically as the next words left his mouth. "Oh, and we would have to buy a collar too! Haha, I would spoil you so much… If senpai would let me, I would take care of everything." His hold on Kasamatsu's neck growing tighter and tighter as his excitement rose.
"Senpai wouldn't have to do anything. Getting out of bed, getting changed, taking baths, getting fed…" His voice had a smooth, silky quality to it. The mesmerizing voice of a charmer. "I would take care of everything. Senpai would just have to be my pretty, moody, black cat. That would be so much fun…"
Kasamatsu turned around to face the taller boy, arms wrapping around his neck pulling him down towards himself. He reached for his cheek, nuzzling it a bit and then moved his lips to Kise's ear and gently bit the pierced lobe, making a shiver of pleasure travel down the younger's spine.
He kept nipping at it for a while and then started soothing it with his tongue.
"Is my kitty being affectionate?" came Kise's inquiring voice.
Kasamatsu's answer was a non-committal sound, a low hum coming from the back of his throat while he kept lapping at Kise's lobe.
With a soft chuckle Kise pushed him lightly backwards. "I can think of many other ways kitty can show his affection for me."