Nico Mannion gets noticed a lot. This past summer, a couple of months before he left for college, he and his parents went to Hawaii for vacation. One afternoon, he and his mother were strolling along the shoreline, talking about how life was changing, when they noticed something unusual. A 10-year-old boy sprang out of the ocean, snagged his phone off his towel and sprinted toward them to ask for a picture with Nico. The next day, two children made their parents wait in the hotel lobby—in Hawaii, with the beach thisclose—for three hours so they could ask for his autograph.