Not sure if this has ever been addressed, but I just assumed that the title is sarcastic bcs Sunao initially hates and is traumatized by Lemon, yet he wishes her to be happy. So, what if the title is actually the ultimate foreshadowing. Sunao truly moves on from her, gets with Kogahara, and HOPES that Lemon is HAPPY and truly moves on from him as well, also serving as subversion of title girl wins trope. Personally, I'm a Lemon shipper but even I admit that it's generic. On the other hand, if Natsumin succeeds it's gonna be so much more meaningful, not only will a popular trope be subverted, the story will also serve as a lesson about moving on, how timing is important in relationships, as well as how bitter reality can be in general. But that's exactly it, the latter ending will leave such a bitter taste in my mouth that I'll probably put this on hold for several months when that happens.