Gotta say, when I saw the new chapter I got anxious before clicking, thats's how much I like this series.
Now, for the chapter, the pain and suffering Kyou is enduring is tough, she never confessed because Kurumi never showed any interest in her while falling in love left and right for others, it kinda is a reverse Jun. She realizes her mistake and wants to correct it but she is too anxious to do it, that's really painful to see.
She wishes for their break up because she doesn't really know Nikaido aside from the bad girl she thinks she is and she thinks Nikaido is just messing with Kurumi, but then later when she sees the expression Kurumi made while thinking of her she instantly gets stab through the heart.
That is a lonely girl if I ever saw one, I hope things go well for her during the series.