Uh, ... I suppose this is the beginning of a mutually-satisfying relationship for both of them, including perhaps a hint of 'tsundere' on the part of Kuroshima towards Ogimichi-senpai (see Page 22).
Ah well, she looked innocent enough, but after seeing that smile on her face when she took the picture...Yup, the femdom tag is well deserved.
That ending though...Hmm, any chance we can get a sequel?