Notes: Requested drabble (so yes, it's meant to be this short) explaining how and when Archer and Rin became lovers. Prequel to a MA rated oneshot, "A Sudden Heat", found on my writing journal.
"Compatibility"
It had been a heated hour and some odd minutes of Master and Servant bonding in the form of a mock fight. Testing each other's abilities, for the Master she learned how her partner moved, his abilities and style. For the Servant he gauged competency and willingness to do what had to be done.
But somewhere along the way it had become something more like a domestic quarrel, one attacking the other's weaker points and suggesting their way (the right way) of fixing the problem was better than the other's (the wrong way). Rin's throat was growing drier by the minute as she went through (for the fiftieth time a least) the reasons for something that Archer had forgotten about after the first time. It was fascinating, how passionate she was over the trivial issue, chest heaving as her breath labored.
Archer was growing tired, but knew he still had more strength than his Master (a little girl, not entirely weak, but not in control of her strength at the moment) so he did the one thing he could think of to shut her up.
Rin found herself pressed hard against the wall, body held in place by her Servant's hard (hot) body. She was suspended limply, the shock of it all overwhelming her, as his full lips parted her virgin ones, capturing her mouth easily.
It appeared that there was still more to learn, after all, Rin decided, arms rising and hands curling in the short white locks mixing with her own jet.