[chaos_alfa]

Originally Posted by GabrieliosP

Rei is a side-story, so don't expect it to exactly follow all canon. The Rei VN implies that the first chapter does take place after Matsuribayashi, but considering that

Spoiler for spoiler:

Takano is still around

then there's no answer for that. If I'm wrong, someone please correct me.

I don't remeber that scene in Saikoroshi-hen so I won't answet the second question.

For the third question:

Spoiler for spoiler:

Nomura is a member from Tokyo who wants to use Takano to gain power in Tokyo. She is part of the "anti-Koizumi faction" (Koizumi was Takano's sponsor and when he died there was an internal fight over whether or not continue his works). She wants to start the Hinamizawa Disaster and then blame Takano for it. Takano will be blamed and it'll crush whatever power the "Koizumi-supporting faction" might have, giving her more power within Tokyo.

I can't remember why she told Okonogi to kill Takano, sorry.

To sum it up: Her role is to fool Takano, making her a scapegoat to benefit herself.

From what I remember Takano was dead in Rei and it took place after the final answer arc.