Mikumo, Osamu

三雲修

Side effect:
Trigger type: White
Osamu Mikumo is one of the main protagonists of World Trigger and a Border member with a low Trion level. He joined Border after Jin saved him. People outside the Mikumo Squad usually refer to him simply as "Four Eyes". He is later promoted to B-Rank, subsequently becoming a Shooter and the leader of the Mikumo Squad.
Osamu is a very honest person, as noted by Yuuma Kuga, who has the ability to discern lies and therefore trusts Osamu greatly. Osamu is very determined and courageous, always going out of his way to help others even if it puts himself in harm's way. He has a strong sense of justice. Yuuichi Jin implies that his reason for joining Border is to help others (in particular Chika Amatori).