An excellent script does not necessarily make for an excellent film!
The reason is simple, it also requires the director's profound skills and the actors' ability to grasp their roles.
A truly excellent director is not one who can get popular actors and be done with it, but one who can place each actor in the most appropriate position.
From this perspective, having newcomers perform is the most authentic form of cinema, as it allows for the expression of genuine emotions and resonates with the audience.
In such cases, newcomers don't need to know the script.
After all, the script is designed according to the development of the newcomers.
Ishida Hideko had long seen the rebellious nature in Yasui!
At that time, Matsuno Yohei didn't need to necessarily take Yasui there, but Matsuno Yohei brought Yasui over early in the morning.
Let Yasui witness some things and then just react truthfully!
This is easier than bribing a traitor, and it's less likely to reveal any flaws.