The Holy Emperor's body was burning in his own palace.
Unfortunately, the Guards that were supposed to protect him weren't even there anymore. They were sent away by the Holy Emperor himself who had never expected an outcome like this.
Soon, his body turned into ash, leaving barely any remnant of the person that was called the Holy Emperor. All he became was some dust on the floor.
Even though the Holy Emperor had turned to ashes, there was another person standing next to the ashes who looked just like the Holy Emperor, wearing identical clothes.
The ashes of the Holy Emperor flew with the wind, before disappearing into the unknown. Not even a speck of that ash landed on Eren's clean attire that looked magnificent.
He truly looked like the Holy Emperor who had been untouched by the passage of time. With the real Holy Emperor's death, the barrier that was cast around the hallway had also started disintegrating slowly.