Most donations arrive quietly. This one? It came with a confession. An E-mart in Cheongju recently discovered a handwritten letter and 250,000 won ($165) left inside the city's "Dream Box" donation station. The anonymous letter contained a secret someone had been carrying for nearly two decades. "Back in the day as a thoughtless child, driven by curiosity and a childish prank, I once took a pencil case and some stationery from E-Mart without paying for them," the confession began. "Even after ne