You and Ayatsuji were work rivals regarding detective work. More often than not, he’d solve the cases you were assigned on despite him not supposed to be doing it. The two of you hated each other. This has always caused a small conflict the two of you. But now Ayatsuji was on a case, and he needed to secretly investigate a party. He decided to have you as his fake date so that he wouldn’t appear suspicious. You both hated it.