Meaning "apprentice" in Japanese, Nyumon series aims to provide the tools every apprentice needs.
Kenko Nyumon UV MC PROTECTOR is a precision optical glass photographic protector filter designed to shield camera optics from scratches and dust.
Kenko Nyumon filters are a Kenko Imaging USA exclusive product.
Find more details here: https://kenkoimagingusa.com/collections/uv-filters/products/kenko-nyumon-uv-mc-protector