I like this series but it isn't really a true yaoi classification but shounen-ai (no explicit sex).
A beautifully drawn, charming and complex story about a charasmatic wealthy theif, Noir, and his "most precious jewel," Florian. I adore this series and am devastated that there is only four volumes. The series has just the right mix of humor, adventure, mystery, and could do with a smidge more romance but it is obvious the love is there even if the lust doesn't make much appearance.