K catches two things: one, Sigma is lying. And two, Howard is suddenly awkwardly staring at his feet. He wasn't used to social situations, certainly, but he'd learned from the best in terms of manipulation. Even if it was unintentionally, on her part.

He wasn't sure what exactly had unsettled Howard, but he got the feeling their alliance - which by this point he'd found overt - was the cause.

"It's good to see you as well, Sigma." A simple greeting for a simple greeting. Pleasantries Akane had taught.

At Sigma's notation to Howard, he raised his hand apologetically - "Ah, Howard and I have met before." He was tempted to ask Howard why he thought so - was a meeting of two alliances really that awkward? - but he let Sigma make the first response - he knew Howard much better then K did.

Although if Sigma didn't say anything to that, K might find it necessary.