Zodiac Sign: Lepus
Species: Human
Affiliation: Border
Team: Tamakoma-2 (Mikumo Squad)
Rank: B
Squad position: Shooter, Attacker (former)
Side effect:
Trigger type: White
Osamu Mikumo is one of World Trigger's main protagonists and a Border agent despite having unusually low Trion levels—he got recruited after Jin saved him. Most people outside his squad just call him "Four Eyes," though he's best known as the leader of Tamakoma-2.
He started as an Attacker but eventually switched to Shooter and climbed to B-Rank. What sets Osamu apart isn't raw talent but his personality. He's almost aggressively honest—Yuuma Kuga, who can literally detect lies, has said he trusts Osamu completely. That integrity pairs with genuine courage; he regularly puts himself in danger to help others without hesitation. It's clear he has a real moral compass, and Jin has hinted that joining Border wasn't just about the job—it was about protecting specific people, particularly Chika Amatori.
Content compiled by AnimeList.moe from publicly available sources.
