First off, don't just skip the text for the NSFW stuff, ya gona want the story bits. (granted most players won't but still worth saying)
This is so fricking good,
I've happy cried reading this, I've sad cried, I've enjoyed the NSFW parts, the music is fricking amazing and fits the story bits so much (looking at you deeper memory ost and many others.) Each route only adds to the players knowledge of the story and makes every replay / reroute that much more intresting.
The barkest corner is done so well to help ya find stuff / scenes ya missing as well as very enjoyable, (tbh its the peak of VN stuffs) that and unlike most other VN's each choice does change things slightly.