Short, sweet, and to the point! Not every day you get to read a VN with (borderline) slave trade of anthro wolf-sharks, that's for sure, and more rarely still you get to have something like that used effectively for the narrative. Now, that doesn't mean it didn't trigger my sensors on how the main characters aren't really that... bothered by it, in general, outside of the one of them it affected, but it was presented as a part of the culture and not a main focus of the story anyway.
This is one of the stories that handled the folklore aspect very well, since it does more than slap an existing myth onto a story; instead, it is built around it. My biggest criticism, by a large margin, would be how mechanical the writing felt at times, describing every move of the characters in the form of a list: "Took the cup, opened the microwave door, put the cup in, etc..." That is to say, however, that at the climax of the story I was not really paying attention to that, since I was invested in the relationship of the two main characters.
Ultimately, it's a self-contained story that's fun to read, if not a little cliché.