Tied with Seduce Me 2 as one of the best otoge I've ever played. Unique, well written, and each story you playthrough is a piece of a puzzle that reveals the backstory behind it all. Definitely recommended.
Waaaay better than it's prequel, which in itself was a pretty good game. Unlike the prequel, each person you choose has a completely different sub-story, which takes up about 75% of the plot. This is tied with Cinderella Phenomenon as one of the best otoge I've ever played.