Sulu couldn't find it in him to be offended by Ianto's dry humor at the moment, because honestly, it was true. Sulu wasn't familiar with the tap, and he'd made that clear the first time they'd showered together, so he figured he deserved a little teasing. "Okay, okay," he groused, smiling to show that he wasn't offended in the slightest, "Yeah, I think I've got it."

Leading Ianto into the bathroom, Sulu moved away from him to contemplate the tap, plugging the tub before twisting the dials until the water was (what he hoped to be) comfortably hot for the both of them. He quietly held back the vague feeling of accomplishment, embarrassed that something so simple could make him feel good. But, then again, he only ever had to press a few buttons and all the guesswork was taken care of. "See? I've got it covered. You just have to let me know when you want me to turn it off."