How to play Amatsutsumi on Mac

Our hero, Makoto, possesses the power of "kotodama" which allows one to control people with the power of one's voice. Having an interest in the outside world, he leaves the hidden village he has lived in all his life. However, he found himself woefully unprepared and collapses on the side of the road in a small town almost as remote as his village. Just as he's resigned himself to death, he's saved by Oribe Kokoro, a girl whose family runs a cafe in that town. Using his kotodama powers, Makoto becomes a part of the Oribe family and begins attending school with Kokoro. He soon meets several girls who each have their own special circumstances. Will Makoto be able to use kotodama to help these girls? And what is the true nature of kotodama? This is a story of the words that weave the ties that bind...