Stremio is a video player that can run videos directly from certain Web sources.
The part of interest here is it can run directly from torrent magnet links too.
It has serie and movie browsing capabilities similar to a streaming service, and the interface also looks that way too. With plugins you can see various sources to stream the movies and series from, which includes plugins from various torrent trackers.
Ongoin series you want to follow can be added to your library. Doing so will add a calendar showing you on which days new episodes will drop, and notify you when they do.