One Piece isn't mine.
Warning: This story is yaoi, which is a term of Japanese origin used to refer to work that refers to homosexual relationships between male characters. Boy love. So if this isn't your thing, please go back now.
Usopp x Sanji.
Blonde hair flowed through his fingers like the finest silken threads, slightly dampened with sweat. Usopp couldn't help but smile softly as Sanji craned his neck forward against the younger man's chest, seeking more of that touch as he slept.
Another nameless inn in another non-decrepit town. Noticing Sanji's hungry gaze following him restlessly before silently following the cook through crowded streets to a place where they could find privacy. Barely making it to the room before hands tore mercilessly at clothing, before tumbling into that pitiful excuse for a bed and screwing each other senseless. Watching Sanji's normally cool face twist in expressions of need, of ecstasy, until that single blue eye widened and rolled back, until he came with Usopp's name on his lips. Finally sated, the cook would curl up against the sharpshooter's chest and fall asleep while the other watched. There were never any words afterwards. Sanji would wake and they'd both dress. The blonde would pay the bill while Usopp wandered off, usually returning to the Going Merry while the other finished his shopping.
They skirted a razor-sharp edge between the purely physical and emotional attachment. Sanji had Nami and Usopp had Kaya, sure. But no matter how much they both tried to fight it, the next town would come and the sharpshooter would see that look, and they'd fall together eagerly atop the closest set of rented sheets.
Usopp's hand stilled over Sanji's blonde locks. Those thoughts again. He mentally pushed them aside. Next time he thought, next time I'll worry about that.
It was always 'next time'.