Kyouya was control itself. He always had everything in order and in place and everything in control. He always knew where everything was, and who had what, and who you should contact if you needed this or that. He had every phone number they could ever need, and everything to fix their costumes, clean their wounds or a new shirt if someone spilled on it. Kyouya was always in control.
That was why Kaoru loved to make him lose control. When he was laughing uncontrollably, because of something Kaoru did, or when he was coming, and he wasn't in control at all. When Kaoru was tickling him, and he twisted to get out of his hands. When he was disheveled and his clothes was wrinkled after a heavy make out session in the closet.
Kaoru loved when he made Kyouya lose control.