Yuuki, Manabu

有紀学

Following the deaths of his father and brother, both of whom served in the SDF (Space Defense Force), Manabu resolves to enlist as well. During his journey, he encounters Louis Fort Drake, another newcomer to the SDF.
Bruce initially despises him due to his pacifist stance and cheerful refusal to carry a firearm (aside from the broken one inherited from his father), and, like many young men, he is somewhat hot-tempered. Through a series of missions, some of which are rather unusual, he gradually adapts to his position as an SDF member.