Koa'Koa Island was once a paradise, but everything changed on the day my grandfather disappeared. After that, the world was bound by eternal winter, and the frozen ocean cut us off from the spirits that have carefully protected our people since the beginning of time. I was born much later than the tragic events, but it was I who had the chance to go on a dangerous journey and find out what happened thirty years ago. If I solve this riddle, I can melt the long-term ice and return home. If I fail... it could cost me my life.