I have both volumes of the manga. Yes, BOTH. Meaning it ENDS UNEXPECTEDLY. I just received the 2nd volume in the mail today and I was like WHAT NO WHY. The second volume does a really, really good job at summing up the events, and I got so excited by the half-mark of the second volume. I was sooooo excited for the next arc! But then... That terrible, terrible note at the end... THE END.
Yes, I know, this manga was made in order to promote the new XBOX360 game (WHICH SHOULD NOT NOT NOT BE ON THE 360, AS NO ONE IN JAPAN WANTS TO TOUCH THAT THING WITH A 50 METER-LONG STICK), but really? Ending it after 2 volumes and not completing the series? REALLY?
There are also some story changes from the original, like
Takeshi and Tsugumi don't get on the ferris wheel, they are off the ferris wheel, but in this same timeslot, they have the same interaction with their feet planted on the ground... The sex scene (only hinted) takes place in this time. The sex scene (once again, off screen, just hinted) in the infirmary NEVER HAPPENS.
I really would have appreciated a continuation, since I do not have an XBOX360 (region-blocked jerk), and the author showed Tsugumi in her new outfit. It's really a shame. But for the manga overall, I give a 7/10.