The concept of this game is clever. You're having a conversation with a friend, and every emotion of the NPC is expressed by a photo of eyes. It's the same person, same pose, but with anger, happiness, sadness, etc. in the eyes.
It's very effective, kind of how emojis help express emotion in texts.
The one drawback in the interactivity and emotion of it is that it all seems a bit shallow. The story is toothless, a frivolous problem with hints at relationship issues. This same technique with a deeper story (not necessarily longer) would be splendid. As it is, it's presented in a very polished and well-done manner.