Мафия Alternative. Zombieland.

and why are these mafiosi so eager to redirect Nera...

Yeah, it's interesting why, considering they found out the maniac's nickname last night...

Added 5 minutes later
Anyway, the maniac needs to be executed today. I completely forgot that the mafia can redirect Night Detective votes. Knowing his nickname, the maniac is harmless to them, and in the worst case, he will become a weapon in their hands.
Nera is the first candidate for the role of maniac, but we shouldn't rush. First, we should try to apply yesterday's clue to her. There is still a chance that the mafia redirected not the maniac, but a random target.