>>280394763
The manga has already told us that Yoru has a very important role in the entire Apocalypse setup, that goes beyond just her ability to create weapons.
You guys try to analyze a story on a deeper level without even being able to read what the characters are spelling out.
Famine wanted to kill people to save them from something that is about to happen, which has to be worse than them just dying.
Asa wanted Denji to kill her to stop Yoru from doing something worse than all of humanity dying.
Falling just said that Denji is important for Death's plans, and Death herself already talked about how important War is.

Yoru hesitating to kill Denji means that her feelings for him have reached a point where they're genuine, so she's "ready".
It's time to resolve the weaponization plot and wrap up the story.