Located on the same side of the Vlatva river, the shops are rivals—the Montagues and Capulets of yo-yo, but without the messy violence. Both stores opened up around the same time in 2010—first the Yo-Yo Store, and then four months later, the Slusny store. Also, both are sponsored by rival yo-yo manufacturers—the Yo-Yo store by Duncan, Slusny by YoYoFactory. “The kids take the rivalry more seriously than the owners,” says Hank Freeman, an American Yo-Yo champion living in the city. “It’s not like West Side Story, though.”