By editing false information into their diaries, they can fool Eleventh.
But he's one step ahead. His secretary has a diary that records his actions. That one is known to be reliable.
Ninth loses a hand in an explosion. Nishijima is shot dead. Amano's friends are captured.
This is when Amano and Gasai swoop in, armed with submachine guns, to rescue Ninth and move on to the next phase of the plan.
Eleventh seals himself in a bank vault.
When they can't open the door, Ninth turns on Amano, aiming to get revenge for her eye, and for Nishijima.