Based on the naming convention, this is likely an update file for the USA region of the first game, though similar version numbers (1.50) have recently appeared in modding communities for its sequel, Demon Slayer -Kimetsu no Yaiba- The Hinokami Chronicles 2 . Key Game Features & Context
File strings in this format (NSP/Zipe) are frequently found on third-party file-sharing sites rather than official storefronts like the Nintendo eShop . Using unofficial NSP files can lead to system bans or security risks. To ensure your game is current, use the on your Switch home screen to "Update Software" via the internet. Demon Slayer -Kimetsu no Yaiba- The Hinokami Chronicles DEMSLAY-KNY-THC-(USA)-NSwTcH-NSP-Update150-Zipe...
: Adjustments to hitbox sizes for aerial attacks and combo timer shortening for specific skills like Akaza's Air Type. Based on the naming convention, this is likely