#sheith AU where Keith is a gas station attendant who works the night shift, and Shiro comes in every Friday night to buy a full size box of the largest size condoms they carry, and Keith is low key dying to ask if he uses them all, or if he needs "help" using them up. One night Keith accidentally blurts out: "So do you really use all of these in a week?" And he's instantly beat red and stock still as he realizes just what he said to the literal Adonis in front of him.