Yumemi's classmate and childhood friend. Ichiko is a very positive and energetic person. She always encourages Yumemi whenever she feels gloomy and is very protective of her. However, she also seems to have co-dependent tendencies and can be overly controlling due to her own insecurities. She had always wanted to see the islands in the sky Yumemi spoke of, and quietly wished for the day that she would see them. It is revealed that Yumemi begins to carry the umbrella as a result of an outburst of Ichiko when they were younger.