The Legend of Korra shows Season and Book in the show page

For some reason The Legend of Korra seems to display both Season 1, and Book One when looking at the show page. Even the Metadata manager shows a Season 1 folder and a Book One folder when the shows folder on the NAS only has "Book One - Air". I tried rescanning the metadata but no matter what I try, I can't get rid of the Season folders.

https://preview.redd.it/5x339xt0wd0h1.png?width=2527&format=png&auto=webp&s=9c738d1107fc741fb74bb9318dd810d52350100d

https://preview.redd.it/9dlim9o3wd0h1.png?width=1019&format=png&auto=webp&s=3c44406744960bdd2413c76048a8d1b22b552acc

https://preview.redd.it/wkc318r6wd0h1.png?width=1534&format=png&auto=webp&s=d09aed4ec1c26eb0bcaa0f9af25e691477035a51

https://preview.redd.it/zfmky1a9wd0h1.png?width=1537&format=png&auto=webp&s=54106d21d4ef6ec996e68ea4acc61e9a7787af3b