"Really?" Joseph's interest was piqued. "You'd actually order one of our brooms? Isn't that traitorous to you Slytherins?"
"It's just a broom, sweetheart," Erina said politely to her grandson, though her eyes rolled. "There are only so many choices and it's no secret the Joestar brooms are by far the best. The Slytherin's would be foolish not to."