“Café Grind, the place that will grind your perfect coffee while you grind on homework.” That's what they used to say. I'm back at this old coffee shop to meet up with an old friend. She told me that there's big news to hear.  -- “I'm extremely confused about what you expect me to do with this information, Doyeon-eonni,” I muster out. -- "We want you back," she proclaims. "We want you to sing again."