Tōru Narasaka/Plot

Background
He had his house destroyed by Neighbors, just like Kodera.

Introduction Arc
Chronology-wise, Narasaka is first seen in Episode 2 of the anime when he is requesting protection for the 3 Idiots in the aftermath of Yuma Kuga's Bamster fight. In the manga, he is not introduced until what would be Episode 7 of the anime.

When Yuma catches onto Shuji Miwa's lie, Narasaka is seen calming Shōhei Kodera down, telling him that Yuma has not made any indication that he knows of their presence. In the fight against Yuma, Narasaka manages to hit Yuma's arm. Although he is praised by Kodera, Narasaka says that it counts as a missed shot since he was aiming for Yuma's head. He is eventually approached by Yūichi Jin and talked out of killing Yuma.

Black Trigger Capture Arc
Narasaka and Miwa attend a meeting with the higher ups, along with Sōya Kazama, Kei Tachikawa, and Isami Tōma. Narasaka gives the report on the events of the battles. He is part of the four squad group that go to take the Yuma's Black Trigger. Narasaka stays behind with Tachikawa and Kazama Squad to support their fight against Jin. He is shown being frustrated with Tōma telling him that he won't shoot at a target that he can't hit. In the end, they lose the initiative and Narasaka and Kodera retreat.

Large-Scale Invasion Arc
Narasaka, Kodera, and Tōma are part of the team that snipes at Hyrein from the roof of Headquarters, backing up Kōhei Izumi. The three of them are awarded for their contribution to Border's victory against the invaders from Aftokrator.

Sniper Training
During the February 10th training, Chika Amatori is seen watching Narasaka in admiration as all of his shots hit the middle of the target. He gets first in training that day, and Akane Hiura, his student, praises his skill. However, he points out Tōma and Yuzuru Ema's pictures and tells them that a good placing in training does not always reflect the skill of the sniper.

On February 16th, the snipers take part in a "Stealth and Target Acquisition" Drill. Narasaka gets first in this training with a total of 38 kills and one death (courtesy of Tōma), totaling at 188 points.

Galapoula Invasion
Narasaka is a part of the group of snipers who are tasked with taking out the Idras from the rooftop of Headquarters. He is seen protecting Hiura when the Dogs appear on the rooftop. At the end of the battle, he is seen with Hiura and Taichi Betsuyaku as they praise Nasu's victory against Wen Sō.

Round 8
Narasaka commentates for the Katori Squad vs. Suwa Squad vs. Nasu Squad match.

Away Mission Test Arc
Narasaka, along with most of his squad and other A-Rank agents, take part in evaluating the participants over the course of Phase 1.