He's the Watanuki type character in CLAMP's Legal Drug. Legal Drug skirts much closer to the shounen-ai line than XXXholic does, with Kazahaya in the uke role and Rikuo in the seme role, like Doumeki. In both cases, you have the slimmer, shorter boy with powers that make him vulnerable being protected by the taller, broader, more masculine boy with guardian type powers. In both cases, the uke is very spazzy.