I'm also rather fond of the art style for this! Another thing that I really liked is that before you even start talking to one of the characters you're warned beforehand what you can expect from them and what interactions with them will be like.
Another thing I really liked is the Image Tracker feature. I was gonna go down each of the general paths I noticed anyway, but selecting a gallery image and the choices being highlighted to let the player know which choice to pick to unlock it is huuugely underrated in a number of other avn's