He is tempted to take down the circle, as a matter of fact, because the way Miquel keeps flitting over its borders does not speak well for its efficacy. But then, Miquel isn't mazoku.
The sudden shock of pain from Cesare is lovely, but at the end of it they're looking at the collapsed puddle of his body, and he wasn't done poking at it yet; is still breaking down the excess bone-lump, and the angles there have bent his leg. So, yes, okay, it's noticeable now, but he does have to give a rueful, private sigh for timing before giving them both a bright smile. "Oh, that. That's all right. Now, Mikeru-san, if you would?" He peers at him. "But you're looking tired?"