When those words passed Karashima's lips, Kiryu suddenly felt guilty. 'Crap,' he didn't think he would end up feeling bad about it. If it were in the past, he probably wouldn't care much, Lila has always belonged to him after all. Whether he kisses her or not should be no concern of other people. But it's different now, Lila is no longer remotely even his.
"What?"
"Uhh, sorry, that's not all we did," Kiryu apologized.
Haruka took a moment to process his words, his gaze darkened, "You had sex with her?"
"N—no, don't be a fool. I'm not that immoral," or rather is that something he should casually bring up? Then again, this is Karashima.
"So you just kissed her?"