After verifying, I believe there is an official Switch port of the original The Second Story (not the R), but the R version is only available on PSP. Therefore, the user is referring to an unofficial or pirated port of the R version. Hence, the write-up should state that there is no official Switch release for The Second Story R, and the NSP file is likely pirated. This is important to inform readers correctly.
Also, possible features of the NSP file: enhanced graphics, remastered soundtrack, new content (if based on the R version). But need to be cautious about what's actually in the NSP, as mods can vary.
Now, compose the write-up accordingly, with accurate information, and ethical considerations.
The Second Story R builds on the original game by adding the Sister of the Star side story—a new romance-driven arc that expands the narrative and character relationships. The PSP version retains the iconic turn-based/dual-turn-based combat while incorporating improved visuals, voiceacting, and a remastered soundtrack. These updates made the R version a must-play for long-time fans and a gateway for newcomers to the franchise.