This is by far one of the most visually appealing games I've played! There is so much that's pleasing to the eye, and there was great use of shaders and post processing in this as well. The opening cutscene was beautifully drawn too. You also have some amazing attention to detail, with the music and environment changing when a new stage of grief is entered. There's some fantastic story to this as well.
My only suggestion is to have an indicator to know when you're too far away from the girl, you could do something like have the light-link thing start to flicker when you're getting too far. Sometimes I would accidentally travel off too far and have to reset the stage again.
Overall you have some amazing stuff here, there is so much done well with this one. I know and hope this one will do really good!