But would they fall for a fake email so easily?

Besides the Hayami Syndicate morons,

Kushiro seems pretty smart. Won't he notice it's a trap?

Yeah, I'm positive he will.

...But even if he realizes it's a trap, as long as there's even a 1% chance that he'll run into No. 1032,

he will definitely come.

How can you be sure?

...Isn't it obvious?

Hayami... 29 people

Hideout perimeter 2 cameras Convenience store 2 km away Few people → Better to finish quickly

The day in question →Truck to scene Clean up the scene within 30 minutes ...truck when finished.