"Don't worry, I'm not crazy, it's just... it's really been a long time since I felt alive. But you are right, I need some rest."
The Withered Rose's eyes will be hard to use again for a short time, and Amberser didn't directly burn money to speed up time; there was no need to push the Withered Rose to the limit just yet.
As he said earlier, the lives of devils are expendable. Why go to such lengths? Good enough is good enough, let Bayer deal with the rest.
While using his own power to heal the Withered Rose, Amberser also manifested another avatar to handle the undead on the battlefield.
Although the converted undead were branded by the Withered Rose, becoming her controlled puppets,
this control was not very precise. If not dealt with quickly, they would even fight the devils.
Gathering the undead was just one part of the job; more importantly, there were the dispersing souls.