Secret Message Kiss
In the middle of a French kiss, spell out a secret message with the tip of your tongue against their tongue. It might feel a little funny to the other person, but at least you'll be getting your message across.
Kurogane and Fai have never managed to get past their difficulty with names. More specifically, Fai continues to call Kurogane by every nickname imaginable.
At times, Kurogane thinks he's gotten used to it. But lo and behold, Fai says his name improperly another time, and he's back to getting angry beyond reason about it.
"Kuro-tan?" Fai calls. He wanders over to the window and peers outside. It's dark and still. Kurogane must be somewhere inside. "Kuro-puu, where are you?" He drags out the words as he walks through the house. "Kuro-myuu? Kuro-wanko?" He counts off the nicknames on his fingers as he enters the doorway of their shared room. "Kuro-wanwan? Kuromicchi? Kuro—"
He breaks off as Kurogane appears in front of him. The other man pushes Fai onto the bed, rough enough to jar him but gentle enough to avoid pain. As Kurogane leans over him, Fai smirks. "What is it, Kuro—" He has no time to finish whatever nickname was about to come from his lips as Kurogane's mouth covers his own.
Kurogane is forceful. His hand presses Fai's chest into the bed, and he can feel the mage's heartbeat beneath his palm. His tongue twists inside of Fai's mouth. His narrowed eyes meet Fai's, the mage's eyes half-closed with desire. "It's Kurogane," he growls breathily.
Fai's nose wrinkles as he feels Kurogane's tongue. Spelling… something? -R-O-G-A-… Kurogane… He has to break away as he starts to laugh. "Fine," he chuckles. His face flushed, he looks up at the bigger man. "Kurogane."
Fai's voice has a mocking quality even when saying his real name, Kurogane realizes with chagrin. But as Fai pulls him deeper into the kiss, his hands wrapped around Kurogane's neck, the man doesn't think he particularly minds.