Spoiler (mouse over to view)
actually the guy she ends up with appears first, but she gets together with another guy first and she falls him only at the end of the series. so, it's up to you if it fits yout request ot not...still, compared to other shoujo manga i've read, it not so obvious who she end up with.
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"In a world where most people would be crazy, then it would be normal to be crazy and crazy to be normal... but then again, if you were normal, then you would be crazy... isn't it crazy what a paradox a little craziness can create?"