The Scar That Invokes the Past Meitantei Conan : Season 26 Episode 4

A blind rich woman named Kurumi Shodo asks Kogoro to help her find a boy who saved her life in the past, and whom she plans to reward very nicely in thanks. Her only clue is that the boy should have a large scar across either his torso or his chest, which he got while saving her life.