According to
wikipedia, "Bonjourno Kaneko" =
Tsuyoshi Kaneko and "Yutaka Kiatwanchai" =
Yutaka Matsumiya.
Keishi Yonao is listed as having worked on this game too, so there's a possibility that he's "AB-1000" (since he and vocalist REIKA are part of TILDE). There's no evidence of this yet so I linked only the first two names.
On an unrelated note, looking at the playtimes, I'm wondering why they split this into two discs...