Key-Oh!
Oh, but I have. Well, not in English, but I do know how the series ends, because I've seen all the Japanese manga scans on the internet. xd
No you haven't. Unless you've managed to do what the top physicists can't and build a time machine that can work forwards as well as backwards, you've not read the whole series.
sweatdrop So what chapter have you read up to? I'm guessing you think 131 or 132 is the final chapter.
The series hasn't ended yet, I should know considering I'm translating the chapters as they come out in Hana to Yume.