A game just recently came out called Saimin Gekou that's entirely from the subs point of view. It was pretty fun, I quite enjoyed it. The game is about a pair of girls wandering a school building trying to find the one who hypnotized them, and trying to find out what's going on. It's made in RPG Maker, so you actually get to wander the school and ook for scenes and whatnot on your own, which is a nice change of pace from VNs. You're looking for a VN though, so that might not be what you're after. The scenes all play out like a VN though, the one difference is that you have to do some slight puzzle solving and looking around to get them. There's only the one ending, and only one way for the story to go, so at least you don't have to worry about what you're doing and can wander freely. The one big caveat here is that it's entirely in Japanese. So if you can't read that, then it might not be terribly appealing.
www.dlsite.com/maniax/work/=/product_id/RJ195436There's the link if you're interested though.