As Cassia said, the last step Aaron had to take to reach the 100th floor was to climb the golden stairs.
At first, Aaron thought of flying across it rather than walking up the stairs one by one. However, when Aaron arrived in front of the Stairway to Heaven gate, he felt something unexpected.
"What? All my magic energy is gone?" Aaron asked, shocked.
"Did you feel something?" Cassia asked, standing right next to Aaron with her attention focused straight ahead.
Aaron cleared his throat, turned to the side and nodded. Cassia smiled. She said that it was the Stairway to Heaven that could neutralize all magic energy, not eliminate it.
If Aaron left this place, the magic energy would recover as before. With the current situation, it was impossible for Aaron to just fly across the stairs.
"There is no other option for you but to go there by climbing the stairs," Cassia replied.