CNN  —  “Excuse me, where are you from? I bet I can guess your language.” When Yuji Beleza strolls through the streets of Vienna, he doesn’t just see crowds. He sees a challenge — and an opportunity to connect. In spontaneous street interviews, the Japanese-Irish polyglot surprises passersby with greetings in their native language — whether it’s Turkish, Swahili, Kurdish, Kazakh or Zulu. With his wide smile and quick-fire linguistic reflexes, Beleza has become a social media sensation, amassing