Fractures: Tenrai

"Embroiled in bitter clan wars for generations, the warlords of the Tenrai Fracture now stand united against the invading Covenant barbarians. Forced into an alliance against the relentless Covenant and their colossal glass dragons, the 343 clans of the Imperial Court have shared once-secret knowledge to create new armor and weapons forged by mortal hands but blessed with divine force. It is through these new tools of war, unimpeachable honor, and peerless skill that the clans will fight and win against the invaders and reclaim the seven provinces lost to their depredations."

- Description of the Tenrai Fracture

Fractures: Tenrai is the first multiplayer event of Halo Infinite. The event launched on November 23, 2021, and ended on April 25, 2022, during Season 01: Heroes of Reach. Its content is based on the Tenrai Fractures universe.

Tenrai, unlike Winter Contingency, or Cyber Showdown, was a recurring event, returning to the game approximately every month. Beginning in November, players could begin to earn a limited amount of levels within the event's progression path through event-specific challenges. Each challenge, specific to the event's Fiesta playlist, when completed would allow players to progress by one level. Originally, the event only allowed players to progress through 7 tiers every week, but feedback provided to 343 Industries would later have them changing this to 10 tiers.

Tenrai would be succeeded by Tenrai II and III during Season 04: Infection of Halo Infinite, continuing the Fracture's theme.

Universe and lore
The Fractures: Tenrai event features content from the non-canonical Tenrai Fractures universe.

The Tenrai universe is inspired by samurai and Japanese culture. In this universe, the 343 clans of the Imperial Court once feuded with each other for generations, but united in the face of an invasion by the Covenant. To defeat the invaders, the clans pooled their knowledge and crafted a new type of armor for their samurai warriors: known in Halo multiplayer under the name Yoroi.

Event tiers
Following the first week of the event, changes were made to the Event Pass.