[Touken Ranbu] Help! What Do I Do When an Infinite-Flow Game Throws Me in With an Unknown Blade?

One day, Auntie suddenly found herself transported into an infinite-flow world;

One day, Konnosuke turned into Kuro-nosuke, and the citadel was about to collapse and be erased.

"We will now read out the rules for the sword warriors:"

"Rule One: You may not bring your original swords."

"Rule Two: You may only carry items or weapons appropriate to your [Role], and you must play your [Role] convincingly."

"Rule Three: Do not reveal that you are a sword warrior."

"Any violation of the above will result in the forced erasure of your citadel!"

And so, they must save the citadel from imminent danger and rescue their lord from a sea of blades and flames.

Success means reuniting beneath the flowers; failure means dying alongside their lord.

P.S. There will probably be around five scenarios. The outline is already done, and the story focuses on platonic relationships. Please note the following setup before reading:

1. Shen Shen is the citadel's master. They have amnesia, and the sword warriors are trying to save the citadel.

2. No one has a golden finger or a System.

3. Everyone is randomly assigned one of the following identities: [Player / NPC / Traitor / Boss].

Theme: Reflections on social issues, the relationship between sword warriors and their lord, human nature, and friendship.