Yuuichi Aizawa is a fictional character from the visual novel Kanon, created by Key. He serves as the protagonist of the story, which revolves around his experiences and interactions with various female characters during his return to a snowy town after several years. In Kanon, Yuuichi's character is depicted as a kind-hearted and somewhat playful individual. As he reconnects with old friends and meets new ones, he uncovers their personal struggles and helps them confront their pasts, leading to emotional and heartwarming narratives throughout the game.