Twenty-something Satoshi Okuno thought he had finally found the answer to his question — what can he do for society — when he saw children studying in a corner of a gymnasium being used as a shelter following the March 2011 disaster in Tohoku.

"I should support children who are studying," Okuno told himself. He talked about the idea with his friend Yusuke Imai and other people, and then established the group Chance for Children three months after the devastating quake and tsunami.

Five years on, the group has provided support to more than 1,000 children.