I thought I had everything figured out... then Konomi revealed that the name Yuzu has a "strange effect" on her, and the memories of her old bestie Yuzu-chan returned, and suddenly I'm a mess and don't know for whom to cheer anymore. >_<
I'll be honest, I wasn't rooting for Chiaki to start with. She comes off kind of manipulative, and entitled to a relationship with Yuzu because she's the one who "earned" it.
On the other hand, the idea that Konomi drifted away because she's got a really bad memory for stuff like that feels kind of fresh. Like the rest of the story labours under a dark feeling but her airheaded "why does that name feel so familiar" routine at the end relieves it a bit.