Nanase: puts her club ahead of Yuni at every opportunity, makes no effort whatsoever to spend even a second of her time on her, and shows no commitment at all in any way to the relationship she herself started
Also Nanase: casually expects Yuni to shell out hundreds of dollars on a solo trip to Osaka so she can support her for a couple hours and then spend the rest of that time alone while Nanase hangs out with her club as usual
You know what, some people really do deserve to get cheated on, and I'm through trying to pretend they don't.
Nobody deserves to get cheated on just because they don't know how to do love. There's a first for everyone, mistakes will be made. Being inconsiderate isn't a death-penalty. At the end of the day, Yuni should have told Nanase exactly what was wrong. When Yuni did that on their anniversary, she should have ended it.
Nanase didn't do Yuni wrong knowingly, while Yuni did.