Well, nsfw is not what you think. This game is not "nsfw" according to steam. You might wanna check age restriction there, they do curate their games :-)
- Grown-up Jokes, dialogues and references
- Occasional bulges
Nothing warranting a porn rating. But you still might not want to be seen at work playing a game that features traps and has suggestive themes and situations. It also does not help that the creator used the word nsfw in description.