This is a coat from Nagumo Fuuka's brand, unroval. The color is listed as blue, but it's closer to a light gray, making it easy to wear. I used it about 10 times last year. There are no noticeable stains, but the fabric has a slightly fuzzy texture to begin with. It was very popular and in high demand when it was released. Since the brand has closed, this is a rare coat that is no longer available.