It sounds like you’re asking about a file for Taiko no Tatsujin: Rhythm Festival , specifically one labeled as an “f exclusive” (likely a mistype or scene release group tag).
To be clear:
This subscription service is an exclusive evolution for the series, granting digital users access to . This library includes everything from Vocaloid and Anime favorites to J-Pop and Classical arrangements. For fans using the digital NSP version, this means instant access to a near-bottomless pit of content without having to purchase individual DLC packs. Why the Digital (NSP) Version? taiko no tatsujin rhythm festival switch nsp f exclusive