As expected of an erotica piece, there's not much plot in the story overall but it's an interesting take on Muzan and the listener's fun night. The script on Google doc is great, but when producing it into an audio drama it needs further refinement. Certain areas of the story feel awkward especially when the VA tries to narrate what's happening as Muzan (e.g. the fingering and BJ scenes). It would be an engaging way to make the listener's experience more intimate, but the way it was executed doesn't work in some situations. In those scenes, it would work better simply as narration rather than dialogue.
My biggest issue with this drama is the discrepancies between the audio and the Google doc script. For example when Muzan is face fucking FL, the script says "Occasionally, through his breaths, you hear the sounds of his moaning, yet it isn’t as frequent as he often remained quiet” but the VA does the opposite of what is described. And it was weird that Muzan sounded as if he was on the verge of climax instead of FL when he fingered her. Another thing I find it weird is the use of the phrase "ask you one thing" by Muzan. As a proud, superior being, it doesn't seem to be in character of him to say that and the places where that phrase is used doesn't really make sense story wise.
The VA's voice fits pretty well as Muzan, and he did a good job for the most part. I think he could have done a much better job with better directing. Another thing I wish the VA could have done is differentiate when he's speaking as Muzan vs when he's speaking as narrator to make it easier for listener to understand. Many audiobook does this where the narrator changes their voice slightly between narration and dialogue. The VA frequently rereads certain lines and I'm not sure if that was supposed to get edited out but that also makes the flow of the story a bit weird.
Overall, this drama is pretty decent with rooms for improvement. But for this kind of quality, it is a bit pricey imo.