well....u got a point there, but they shouldn.y add like a preview or anything like that, it makes want to get soo badly, lol, i know a lot about kh2 though, i dont think riku has a big role in this though, i think its more related to kiari, the girl in KH:CoM, and sora, their relationship, the girl in KH:
CoM takes over the organzation(except ansem) and send the dark side of kiari to kill sora(i think) the girl that looks like kiari i think is the dark side of kiari, though shen looks better than the original...lol, i could be wrong