Now formerly the 1st Division Captain of theShinsengumi, and was a trainee at Kondou's dojo in his youth. He is younger brother of Okita Mitsuba who raised him after their parents passed away. He was one of the best swordsmen there before joining the force where he is also recognized as one of the best, if not the best, swordsman in the Shinsengumi. Fiercely loyal to Commander Kondou, he pretended to defect to Itou Kamotarou's camp in order to stay by his commander to ensure his safety.
During his childhood Sougo's parents had passed away leaving his older sister, Okita Mitsuba, to raise him by herself in their home village. She herself admits later to spoiling him because of their parents' death, which causes him to be aloof and distant. Because of this personality trait he never had many friends, but that was until he caught the eye of Kondou Isao who took him in as a trainee into his Dojo. He grew fond of Kondou and the dojo and still highly respects him.However, after a new student, Hijikata Toushirou joined the dojo, Sougo became more distant, feeling that Hijikata was taking over Kondo's attention and favoring Hijikata over him. Sougo noticed that Hijikata had grown a close friendship with Kondou and Mitsuba, this accompanied by his arrogant attitude at the dojo caused Sougo to hate Hijikata with a great passion.A few years later Sougo along with the other Dojo students set off for Edo and subsequently set up the Shinsengumi. Okita Mitsuba wanted to go with Sougo to watch over him and to be with Hijikata. However after Hijikata rejected Mitsuba's request that she wanted to follow him (out of knowledge that the path he has chosen may cause him to lose his life at any time) This just fueled the fire for the hatred Sougo has for Hijikata and ever since he has undergone numerous murder attempts on Hijikata, from Voodooism, slashing with a sword, to shooting him with a bazooka. He always misses though so it's unknown if he truly wants him dead or just likes threatening him and getting him hurt every so often. He fully understands Hijikata's feeling towards his sister and the reason why Hijikata rejects his sister, but hates him none the less.
Okita Sougo appears to be a mild-featured young man with short light brown hair with jagged bangs and reddish brown eyes. He has an almost childlike innocent face as well as thin lips.He wears the standard Shinsengumi uniform.The neck has a white cravat inserted in a black vest with a yellow lock. It assumes a dark, unbuttoned jacket reaching to the thigh with a collar. It is decorated with gold buckles and buttons has a triangular-shaped cuffs. Black trousers supports brown belt with a silver buckle. At the left hip is tied dark katana, from which projects the katana handle. On his feet are black, heavy boots on a small heel.And is barely seen without it. When resting he wears a distinctive red sleep mask with eye markings.Often carries a sleep mask for sleeping.It has a black border and red painted interior with a pair of wide-open eyes with straight lashes.