[Sterling01]

Originally Posted by Klashikari

System 0 is "システム零", by －４５
This track is used in

Spoiler for Episode 1, chapter 14:

When everyone finds the final letter in Kinzo's study, and Winchester Natsuhi is about to shot down Maria, Genji, Nanjo and Kumasawa, as only one of them could put that letter on the table

Basically, it is the mindrape/brickshit BGM

IIRC, this is a startreck reference.

It's also used in

Spoiler for Ep 2:

When Battler "finds" the final letter and Winchester Rosa brings up the fact he might not be the "real" Battler