I just finished reading this.
First things first, this was a little on the short side. I mean, I know it's a novella, but I still wish it was at least a bit longer (not necessarily a full book and certainly not a SE, but still... maybe an extra 20-30 pages). It was really just one event hopping to the next. Everything was so quick to change.
Ravenpaw and Barley are cute once Barley stops being a mister grumpy gills.
Riley and Bella are cute, but I wish we could have gotten a bit more into their dynamic and gotten some more insight into their characters.
Did I mention things happening too fast? Leafstar was so quick to listen and accept Ravenpaw's plan. Also, how does a Clan that outnumbers and outpowers their enemy have a hard time figuring this out? It's like when ShadowClan had that issue with the two kittypets. I mean, come on.
The kittypets are obviously not really much of an enemy. Once they got a few scratches they were off. The fight was over just as soon as it begun. They very clearly weren't there to fight; just wanted to cause a little mischief and mayhem; a bunch of bullies really.
Ravenpaw obviously had some sort of stomach issue; I don't know what it was exactly that caused it (cancer?), but it's what brought him down - though that kick seemed to be the final blow. Also wish that they had just given him his name, but I guess he's just had it for so long now it didn't matter to him.
Overall, I guess it was fine. Nothing special.