Oppression (or Opresión in its original language [Spanish]) is the first novel from a series of novels under the same name (or "a tale from Oppression" ["una historia de Opresión"] whenever the story itself is a spinoff).

Oppression is counted has "Oppression 1", even if there's a lack of a number.

Important lore notations:
- Oppression (1) happens on the year 2030, on a planet named "Esphero" (Sphere pum), which is a parody of planet Earth.
*Any historical event past January 1st, 2020 is not canon on Oppression.
**Not every historical event is 1:1 on Oppression (this means small or big changes).
- Not all mammals evolved into an anthropomorphic form (and aves, aquatic and other animals are not anthropomorphic at all)