Left side: Giyu Tomioka design, right side: the character "Demon Slayer". Set of 2, but with the same design. The back side is unopened, so it may be difficult to see the design, but please check the image. Popular classic pattern mask for children. Suitable for Halloween, etc. New and unopened. Although it is a beautiful item, it has been stored at home. If you are nervous about this, please refrain from purchasing.