Elden Ring | Exploring the Radahn Festival at Redmane Castle w/cutscene, dialogues, and Polite Bow

I explore Redmane Castle from the plaza where the NPCs are up to where the teleport is to go to Starscourge Radahn. The plaza is where the boss fight Misbegotten Warrior and Crucible Knight takes place. The festival can be triggered before defeating these bosses. You can kill Starscourge Radahn and come back later in the game to kill the Misbegotten Warrior and Crucible Knight if you hadn't already done so.

"Redmane Castle has two states. At the start of the game, it will be populated with enemies, all rooms will be reachable, and the final plaza will contain the Misbegotten Warrior & Crucible Knight boss fight. However, at some point during the game you will trigger the Radahn Festival which will change the state of the castle considerably. There are three ways to trigger this:

- Activating any Altus Plateau or Mt. Gelmir Site of Grace (The Sites of Grace within Volcano Manor don't count, so in order to activate the festival from the Raya Lucaria teleport you must defeat either the Abductor Virgins or Rykard.).
- Informing Blaidd about Radahn in Siofra River (This requires Ranni's questline).
- Talking to Iji about Jerren (This also requires Ranni's questline).

Once the festival is active, all the soldiers in the castle and its surroundings will vanish, the waygate from the Impassable Greatbridge site of grace to the Chamber Outside the Plaza site of grace will activate, a number of doors will be locked, and the plaza will contain a number of NPCs preparing to partake in the Radahn Festival, including Blaidd and Alexander. Finger Maiden Thorelina will give you the Polite Bow gesture if you speak with her. Talking to Jerren in the plaza will allow you to battle Starscourge Radahn. Once Radahn is defeated and you speak to Jerren inside the chapel beyond the plaza (and then rest at a site of grace), the Radahn Festival will end and the castle will return to its original state."
https://eldenring.wiki.fextralife.com/Redmane+Castle#radahn-festival

Starscourage Radahn
"Starscourge Radahn is a Legend Boss in Elden Ring. Starscourge Radahn is heralded as one of the mightiest living demigods, having fought Malenia the Severed to a standstill during the Shattering. However, his resulting affliction with the Scarlet Rot caused him to be driven to insanity, crippling him and reducing him to a state of feral rage. He is located in Caelid, where he can be accessed from Redmane Castle after activating the Radahn Festival by progressing far enough in Ranni's questline, or activating any site of grace in Altus Plateau."
https://eldenring.wiki.fextralife.com/Starscourge+Radahn

Polite Bow (gesture)
https://eldenring.fandom.com/wiki/Polite_Bow