Definition of subseries
- … a full relaunch of the flagship series, including a subseries devoted entirely to Kevin Keller, the first openly gay character written for the comics.
- —The Georgetown Voice
- The best way to think of Trails is as a collection of three sub-series. Each of these sub-series is set in a different country, and there are plenty of references and character crossovers, but you can play each one on its own.
- —Jason Schreier