Another solid volume, with episodic requests for Kazahaya and Rikuo to face. The cases themselves are diverse and fun (and here we get the first must-have, in the same way most anime need a hot springs episode, manga of this sort always end up with the main character in girl's clothes against his will at some point.)
In this volume we also start to get a little more about these two characters' past - and about a pair of women who were very important in their lives. It's very clear why Rikuo's is not in his life anymore, but with Kazahaya, things are more up in the air.
Oh, and we also get a cameo of characters from... Suki I think? Because it's Clamp, so there need to be cameos. :)