The script adds a button "Download" next to the top right nav bar which on-click emulates a mouse click on all selected magnet links appearing in the search results on this searchpage. This enables the user to open multiple torrents at once instead of clicking on every link individually.
The user wants to download e.g. all episodes of a single anime. So he would refine his search parameters to ultimately only having all the episodes of the desired anime from one fansubber group with one resolution in his search results and then clicks "Download" to import all at once into his torrent client.
E.g. for search parameters: Category = Anime - English-translated, Search = "Kimetsu no Yaiba horrible 1080" and then click on "Download" to download all selected torrents at once.
The script requires you to have a torrent client installed that can open magnet links and is configured to do so if you click on a magnet link in the browser (which is usually the case by default). I have only tested it with Tixati torrent client, but in theory it should work with every client.