|Spoiler Alert: This page contains spoilers. Read at your own risk.|
|Full Name||Saegusa Koujirou|
|Affiliation||Ten Master Clans (Saegusa)|
|Novel||Volume 19, Chapter 13 (Mentioned)|
Appearance & Personality
He lives and works at the Seventh Research Institute owned by the Saegusa Family. 
Koujirou is three years younger than Tomokazu who is turning 27 in 2097.