Not sure if its a good or bad thing that I got an ending really quick, but ahem...
Very different from the previous game, for sure! But not in a bad way. (Sidenote: I nearly typed bad way into good way, which would've really changed this...)
Something that did come to mind, and going off my poor memory, have we ever gotten to pick the protagonist's name? I know it only came up once in this one so far (at least in the route I did that time).
Also Hajime looks like he'd belong right in an NTR route...