What had happened? Why was the Maple Division engulfed in a sea of fire?

Sergio noticed that the originally beautiful Maple Division was reduced entirely to ruins under the burning fire, and no one else was in it. Thick smoke billowed inside.

"Friend!"

Just as Sergio was uncertain, Arthur endured the pain, stepped forward, and said carefully, "What do you want? I heard you asked us to let your master go. I think there must be some misunderstanding."

Arthur looked sincere when he asked that,