As far as we can tell, this is a dating sim, and a pretty tame one at that. The translation seems to have something to do with graduation, but we're relying on web sites and whatnot for that, so if it's wrong... sorry!
NOTE: All photos depict good condition items only; actual product may vary.
Used Sotsugyou Crossworld (good case, good instructions, good spinecard)
Used Sotsugyou Crossworld (good case, good instructions, poor spinecard)