Part of Sumire wants to make her excuses and run the hell away from this conversation. But she can't. For one thing, if Hamuko is friends with Aragaki-san, she'll probably be staying here, which means they'd end up having it sooner or later anyway. For another... the whole point of going into her own Palace was facing the truth, so she can't start running away again.

We'll reach the top of the world together.

"The worst part is that I didn't even want a chance to keep going. I just... Kasumi was always so much better at everything, and I finally lost my patience with it. I just wanted her to understand and I thought she never would, and now she really never will. Because - because she saw something in me that I don't know how to see in myself."