Thank you for the review!
Biboo's attack locks on when the last cut is made and a hilting sound marks when its safe to come out. It is blocked by LOS if you get in cover before it locks on, sadly we had no time to make it lose lock if you get in cover afterwards.
Shiori cannot be defeated by only hitting the enemies, she has a trick to defeat her in the "Tips if stuck" menu, but it's true that Shiori's mechanic is not as intuitive as we thought it is. A little extra trick, if you dont have time to kill the shooting ones when aiming for the "trick" you can focus on killing the novelknights and leave the shooting ones alone if you can dodge them.