The difficulty of Cat Girl BOSS has been modified, but it has not been updated yet.
This change is mentioned in "progress report 0909".
Since this is not a critical bug, it will be included in the next major update.
The difficulty of the Nightmare BOSS can no longer be reduced.
Each of Nightmare's attacks has ample prompts and reaction times.
You just can't fight recklessly.
(Purchasing props sold in the store can effectively increase the fault tolerance rate.