Timeline sub-X

Timeline sub-X is a minor diverging branch of Timeline X, occurring as a result of a temporal paradox in Prague in 1842. Under normal circumstances, such a divergence would "wither" away and not produce a stable and lasting timeline. In the case of sub-X, the time travelling organization Conception Générale et Ingénierie created a pocket reality similar to a Horizon Realm in this timeline.

Unlike other timelines, sub-X lacks its own consistent temporal continuity, instead it exists as a separate locale outside of conventional time.