Memories of a Certain God

Ten years ago, Miyata received a gift from his childhood friend, it was a stone, a yellow one. "You should keep this with you, always." That's what he said, before going home. That day, he disappeared. Nobody had a clue on his whereabouts. Until today. Ten years has gone by, and he appeared in front of me. "Hey, Miyata. Did you keep the stone with you?"