Shūji Miwa/Plot

Background
Shūji hates all Neighbors because they killed his older sister. He joined Border to avenge her death.

Introduction Arc
Miwa and Yōsuke are first seen in the beginning of Chapter 2, investigating the Danger Zone after Yūma Kuga's battle with the Bamster. He contacted HQ, confirming the destruction was caused by a big Neighbour, and asked which unit was responsible with defeating it. Yōsuke assumed it was the doing of an A-Class. Miwa was then informed that no other unit was sent to the area, meaning they were the first unit to get there. This confused him, causing him to wonder who was the responsible.

He was then seen again in Chapter 10, when Osamu was called to the HQ by Mr. Kido to decide his punishment regarding the incident in Osamu's school, as he broke Border's rules by using his Trigger (which was developed for training only) to battle, despite C-Class members not being allowed to battle. He was quietly watching the reunion.

Yūichi then arrived and Kido thanked him for coming, and then introduced himself to Osamu, as if they didn't know each other yet. Kido started the reunion by stating they should do something about the irregular portals, but Mr. Shinoda asked him to wait, saying they first should reach a consensus regarding Osamu's punishment. Kido answered saying it was already decided (he'd be fired).

Shinoda defended that Osamu should not be punished, and should instead be promoted to B-Class, to which Mr. Kinuta and Mr. Netsuki contested. Kido then said that he had no place in his organization for people who could not follow a single rule, and fired Osamu (thought he was later reemployed with the help of Yūma and Yūichi).

After the reunion was over, Miwa asked Kido's permission to follow Osamu, which he allowed him to.