[Nisei is less than intimidated by your threat. To put it mildly.]

That's the first thing you worry about? I'm not interested in his ears, you pervert. Seimei still has plans for him.

[Oh, it was beyond rewarding to watch you get that scared. But Nisei has something else in mind.]

I've been watching Ritsuka since you left. What would you be willing to do, in exchange for information on him?

[It's devious, but politely open-ended. If you make it worth his while, maybe he'll feed your sad attachment to a sacrifice who is no longer yours.]