"Hikers also give locals someone to communicate with. Locals can't talk to each other about the disaster. You could meet someone in a bar, but you don't know if they've lost a wife or a child, so you just don't bring it up. Even in a family, it's difficult to talk to each other. Hikers are from the outside and it's obvious, so it's easy to talk to them. Even after 10 years, people still have a lot of the tsunami inside."