First pressing comes with "another jacket," which is actually the Gargoyle drawn by Inamura Yuuna. You can actually see the video of her and the other two voice actresses drawing them on the "Introduction DVD" (BIBA-6610). I wanted to show the drawings, but at the same time, didn't want to, so I ended up putting up a tiny version of it.
There is something strange about the sound on this CD. Inamura-san's voice sounds extremely "processed." My guess is that it involves digital pitch correction, and a lot of it, too. I checked the only other solo song of hers I have (hitori dake no tokimeki from Koikoi7) and it doesn't sound as bad. I don't know if she's a good singer or not because I've never heard her sing live, but regardless of all that, I thought current digital pitch correction technology is good enough to prevent the kind of major artifacts I hear from this CD.
Whatever it is, it's annoying, so it gets a lower grade, and an extra minus as well.
Of course, I have nothing against her. She's really cute and all ;^)