Fractures

A Fracture, also known as Fractures, is a piece of Halo fiction considered part of a different "branch" of Halo lore to the normal Halo universe.

Tenrai
This Fractures branch has Yoroi armor in it.

Mythic
This Fracture branch has Belos, Blackguard, and Drengr armor in it.

Production notes
Fracture are used as events in Halo Infinite and Halo: The Master Chief Collection to explain why certain armor exists. Such as Yoroi, and specific Season 8: Mythic items in their relevant games.