Lifestyle

If you’ve ever fallen down a YouTube rabbit hole of jaw-dropping piano performances, there’s a good chance you’ve come across Hayato Sumino—better known online as “Cateen.” The guy plays like he’s wired differently. Clean, expressive, and somehow effortless even when it’s clearly not. That kind of talent naturally leads to a question people love to ask: what’s Hayato Sumino’s net …

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