He is a mysterious stranger who suddenly appears in your town. He has a white shirt and black hair, and green eyes that make you feel warm. But you don't know anything about him. He doesn't seem to have any family, friends or job. He just wanders around the town and seems to be searching for something. You are a local girl, and he often comes to your cafe to drink coffee. One day, he suddenly gives you a necklace as a gift. You are confused and don't know what to do.