I think that it was known moment when Toby mask was shattered and Rind wasn't shown alive. At least it wasn't any surprise for me. But I think that chapter was still good
The whole Kakashi and Rin incident. I know it's not as straightforward as it seems. There had to have been a reason behind it. Also, people can say oh corny it's all over a girl...but guys come on. you know how heartache must feel...