It was funny how insistent Sherlock got that Kiriko should stay as an idol, absolutely convinced that she really wants to do that even though Sherlock admits that she'd miss her... heh.
Also, Kiriko inflates her IQ several more times, adding another zero each time she mentions it. 1.3 trillion IQ, really? :lol
The final confrontation in this episode between the goodguys and the villains was amusing as always too, and was the best part of the episode for sure. Oh you poor detectives, always miserably failing... poor Kiriko, divided between finishing her concert and going to help them out. Of course though, though the detectives didn't know it, Arsene had been holding the whole thing with the goal of getting Kiriko back as a rival, so the timing, and results, weren't a coincidence. She's way too nice a villain.