I love this series so much. It's beautiful, it has pretty much everything one could hope from a Yuri series, and it even has my favorite trope: a play which mirrors the real world.
Yuu really is the cutest. No wonder Touko loves her.
But pretty amazingly, YagaKimi has some seriously insightful and almost philosophical moments which made even an adult person like me pause and think. Especially in the last few chapters, when Sayaka talks about loving someone who is changing and when Yuu thinks about how selfish Touko's love for her was since she was never allowed to respond... Brilliant.