For me it's Negima?! because that was the first ever manga I collected.
So what's yours? Are you trying the humongous quest of trying to collect all the Naruto series? Or are you proud of an unknown series that hardly anyone knows about but you love?
So what's yours? Are you trying the humongous quest of trying to collect all the Naruto series? Or are you proud of an unknown series that hardly anyone knows about but you love?