The controller that Yuki has stolen out of Miho's hands is that of the PC Engine (TurboGrafx-16).

Piro tweets: A at-scale sample of what im working on, kind of a group shot thing... (no, you can't see the whole thing yet)

Piro tweets: oops, a link would help:

Piro tweets: For the curious, this is where the coloring of the DPD is at as of last night. Not done, it's just flats: