Disclaimer: This being fan-fiction, I do not own X/1999 by CLAMP.
Warnings: mild sexual situations?
This is dedicated to the person who encouraged me to write this stupid idea, when I got it at night instead of falling asleep. You know who you are.
The best way to avoid STIs is abstinence
"A-ah…"
Seishirou smirked into the other man's neck; Subaru-kun definitely made some lovely noises whenever the older man bit him there, he decided. Seishirou sucked gently on the same stretch of skin as a reward for the other man, his thigh rubbing Subaru's crotch.
Subaru pressed his upper body into the sheets and shifted his legs further apart. Maybe he realised where they were heading, which was why Seishirou could hear him try to speak between his heavy panting. "Ah, Seishirou-san…" Another wet bite on his neck. "Do you have a-a, condom…"
Seishirou paused for a moment. Then, he raised his head so that he was looking down at the younger man. His face was passive. "Subaru-kun is meticulous, as always."
A slight frown appeared on Subaru's face. "Wha-"
He stilled when he saw Seishirou begin to reach out behind him, slowly, slowly. "I can't say I was particularly prepared for this," he began, mostly to himself. "But still, one has to adapt." Subaru frowned deeper still until he felt Seishirou's fingers graze his ear.
"What-"
A flick of his wrist and Seishirou pulled back his hand, a condom now wedged between two fingers. Subaru looked up at him, wide-eyed.
"Well!" Seishirou sounded suspiciously bright. Subaru continued to stare at him. "That always was my favourite magic trick. I learnt it from a fellow student when I was fourteen."
Subaru narrowed his eyes.
"It's easy enough to do, actually. I could teach you if you like."
"Get off."
"Is something wrong, Subaru-kun? You're frowning."
"Get off me."
"But I thought we were in the middle of-"
"If you don't get off me I will kill you. Where you are, right now."
"Half naked in your bed, Subaru-kun? That's not very kind of you. What would your grandmother think of you?"
.
Later, when he was walking shirtless to his own apartment smoking Subaru's stolen cigarette, Seishirou would consider the evening as an unadulterated success.