Who's Hiro's weapon?

Hiro is only shown in one chapter of the manga, and one episode in the anime. Since he is only seen when he was Excalibur's miester, no one knows if hiro has another weapon.

Clair:NOOOOOO!!!!!!!If he had another weapon he would told me,Black Star!!!!!!!
Black Star:What did he did to you?
Clair:Just do something...and you can eat whatever you want in my house
Black star:Okay!!!!!Hiro,sorry but Clair's food is delicius and thats why
Tsubaki:Oh,dear