The truth about Shinjuku was covered up by TLT. Saya Tachibana sneaked in to find out the cause of her family's death, and accidentally became a Nexter. In the darkness and pursuit, she used light as a blade to inherit the mission of truth and freedom.
This article strictly follows the original work and is a second creation by a fan. It completes all the settings of the original work. It may be a bit boring to watch, but you can try the plot.
Fei Shuangwen, Holy Mother, etc.