Masamune Kido/Plot

Past
Kido was a member of Border in its early days with Shinoda, Rindō, and Yūgo. He was senior to the former two and colleague with the latter.

Introduction Arc
Kido is first seen at the meeting where Osamu's punishment would be decided. During the meeting, the topic of irregular gates is also discussed. Osamu is not punished since his actions have raised Border's reputation. After Osamu leaves, he allows Miwa to monitor him since Miwa suspected that he was hiding a Neighbor, and eliminate it if there really was one.