The author gave us a great scare, making us think that it would end in a bittersweet or tragic way, but it was only that they separated for a while.
I loved the manga in general, by far my favorite work by this author, I still feel that Kyouko felt something for Kurumi, but I think she learned that if she loves her so much, she has to let her go, I am also glad that she did not take advantage Kurumi and her emotional state to steal her, which she could have done, but she knows that if she did, she would lose her as her valuable friend.
And they end with a kiss just like when they decided to go out.