Choose the production before the episode
Demon Slayer searches can point to the television series, Mugen Train or Infinity Castle. Start in the Demon Slayer collection and choose the series or film you mean. A feature running time and a television season list describe different formats.
For another series, the anime selection includes Dan Da Dan, Gachiakuta, SAKAMOTO DAYS, Kaiju No. 8 and The Summer Hikaru Died. Quick look helps distinguish the premise and tone before you add a show to your list.
Compare chapter names when numbers differ
Anime can be grouped into arcs, seasons, parts or continuous episode runs. A service may divide those differently from a programme database. Read the episode name and the point reached in the story when returning after a break rather than trusting a bare number from memory.
The checkpoint tool accepts episode numbers recorded for the selected season. It is a manual reminder, not a player history. If the service uses a different arrangement, compare the episode title before deciding which number to keep.
Dubbed and subtitled editions
Japanese original audio does not establish the available dub or subtitle tracks. Check those in the edition you choose after Watch now. If a group prefers English audio, confirm that track before starting a multi-episode evening.