I didn't download it, but if you are viewing it from any perspective, 1st, 2nd or 3rd, it still has a protagonist, even if a story doesn't exist. Think of it this way: even with simulators, where you just create a female character, then choose different positions and locations to bang her in, you are either banging her in 1st person (POV), or 3rd person (watching 2 characters fuck, from the side or back camera), or if a dev were to get creative and use 2nd person (you are viewing it from his perspective, but controlling what she does), in any case, you are still creating some sort of story, because you're watching a scene unfold.
Games that don't have protagonist tags are due to the uploader not understanding how all this works.
"mysteries and beautiful women " in the description, with a picture of one woman in the banner...either you are controlling the woman in the banner, and searching for various women, and it is a lesbian game, or you are controlling a guy, and meeting various women, and she is the main star of those women.
Could be viewing it as a guy, but still controlling what she does (2nd person). Either way, I still think it needs a tag. lol