There are many Story Arcs in Epithet Erased. Although, since so far they have only been attached to one piece of media it has not been necessary to make induvial pages for them. In an interview he gave simple names for the first two arcs of Epithet Erased[1]. These names were "Museum Arc" (for EP 1-4) and "Western Arc" (for EP 5-7) And as such those are the names this wiki uses to differentiate the two halves of Season 1.
Future Plans
Although with the Season 1 adaptions (EP 1-4 Novelization & EP 5-7 Novelization) of these arcs there will be two pieces of media sharing a story. So once official names for the adaptions are released that will be the Arc Titles. It should also be noted that Season 2 will use the Prison of Plastic story as well, once Season 2 is confirmed to be happening an Arc page will be made.
An Arc's page will simply be called <Arc Name> (Arc).
Why we need Story Arcs
Story Arcs allow for easily referring to a specific story instead of saying something like, Epithet Erased Ep 1-4/EP 1-4 Novelization. Instead we can just say "Museum Arc". And once the name for the Novelization is announced a page will be created with the correct Arc name.
When & How to use Arc Names
You should use the Arc name whenever you are referring to a specific story, and that it is true in both versions of the Arc.
Currently you should wen referring to the following two arcs do it like so,