Hideyuki Makimura

Hideyuki is a supporting/sub-character in A.H.

Plot
He is Kaori Makimura’s elder brother and first introduced during Kaori's back story in the anime, where he is already a detective and meets Ryo Saeba for the first time. Ryo becomes his team partner in City Hunter later on, active in cases to judge those who can't be judged by the law.

Personality
Hideyuki is described as a person with a strong sense of justice.

Kaori Makimura
His younger adopted sister.

Ryo Saeba
He first met Ryo when Kaori brought him to the clinic after suffering a gunshot wound. Hideyuki was determined to bring Ryo into custody after learning about his forged personal documents. They however form the City Hunter team later on behind the scenes.