Ok, we love him.  Why?!?

Shirou Satsuki:
He's *such* a bishounen.  ^_^;;  Not to mention the fact that he's incredibly intelligent, and sweet enough to wait for Suzuno even though she started her life over.  Plus, he has a nifty power that kind of reminds me of Kurama. ^^;;

Len-chan:
He waited for his lover for +90 years.  He didn't care if she married and had kids, he still loved her no matter what.  That's total, undying, eternal, devoted  love!!! He's smart and kind.  He's very perseptive and fine.