Known for its sprawling storyline and wide range of characters, Honkai: Star Rail has a huge amount of in-game lore for players to delve through. This ranges from in-universe historical books and notes describing worlds long-destroyed by warring factions and rogue Aeons to information on the backgrounds of some of the characters the player meets during their journey through the cosmos. However, much of the lore available to players includes big gaps or missing pieces of information that have been purposely redacted by the developers to tease future plot points or story arcs.