When an esper was heavily injured, typically, they would get emergency treatment from a healer, and then be brought to the hospital or the guild's clinic depending on the level of their injury and the guild's facility.
But Trinity brought Bassena to the basement floor.
And for a good reason.
"He's where?!"
The third-floor basement where the high-rank espers sparred was trashed. The arena that was usually bright became dim as tendrils and fog of darkness spread throughout the entire room. The walls were dented, railings were bent, glass was shattered.
Han Shin had done his best to heal the esper earlier, but healing ability wasn't an all-cure. The skill essentially used up the healer's mana in conjunction with the target's life force. So he couldn't heal everything all at once.