Chuuya knew Akira was a reaper. When we met last night, he seemed to be out and about for a purpose, but he also seemed surprised to see me. Then he started demanding to know where Akira was and for Akira to show his face.

He also knew Ranpo was one too, when he killed Ranpo.

[Look. All she's getting at is that it's very likely one of Ichigo's reaper buddies has been selling out reapers to Chuuya. She doesn't believe Ichigo did it, but any of the others...]