On Christmas Eve, Shiroe and the other members are fighting the level 97 boss monster "Luseat of the Seventh Garden."  But two more boss monsters appear in the middle of the battle, and they are overwhelmed.  Shiroe is caught in the fires of "Ibrahabra of the Third Garden"...
I guess you'd call it "True White Knight Mode."
Creo que lo llamaban 
Modo de Verdadero Caballero Blanco.
Il passe en mode « Chevalier Blanc ».
Sarebbe la "Vera modalità cavaliere bianco", insomma.
Modo do Verdadeiro Cavaleiro Branco,
 acho que era assim que se chamava.
Истинный режим Светлого рыцаря —
назовём это так.