No, I agree with that plan.

If we kill each person in a different place, we'll have to clean up to 29 locations.

Doing it in multiple locations increases the risk of being seen by witnesses.

Besides, it's impossible to get near Kushiro's house or workplace anyway.

So if we're serious about this plan,

we need to gather everyone in a secluded area.

Hayami Syndicate + Kushiro Annihilation Strategy 29 people

Therefore, first......