Hideyuki is [Kaori](https://anilist.co/character/2066/Kaori-Makimura)'s beloved older brother, and was [Ryou](https://anilist.co/character/2065/Ryou-Saeba)'s partner in City Hunter before his death.   Before he could tell Kaori a secret about her past, namely that she was found abandoned by Hideyuki's father and adopted, he was fatally wounded and later died in Ryo's arms. Hideyuki's final request was for Ryou to take care of Kaori.

A young Taiwanese assassin codenamed "Glass Heart" committed suicide by jumping off a building, and her heart was pierced by metal fence. Miraculously, her life was saved by heart transplantation. During her recovery she began to experience strange dreams, which lead her to Japan looking for the donor of her heart, who happens to be Kaori Makimura, former partner of City Hunter Ryo Saeba. 
The author mentioned in the first tankoubon volume that Angel Heart only shares the same characters of City Hunter but not it's continuation. The events are all parallel universe, therefore it has nothing to do with City Hunter. (Source: Wikipedia)

[Official Profile](https://www.aoni.co.jp/search/tanaka-hideyuki.html)

[Blog](http://susumu-chiba.jugem.jp/) | [Agency Profile](https://osawa-inc.co.jp/men/chibasusumu/)

Ryo Saeba works the streets of Tokyo as the City Hunter. He's a "sweeper" and with his sidekick Kaori Makimura, he keeps the city clean. People hire the City Hunter to solve their dangerous problems, which he does with a Colt Python. When Ryo's not working on a case, he's working on getting the ladies, and Kaori must keep him in check with her trusty 10 kg hammer.
 
(Source: Anime News Network)

__Date of Birth:__ 1952

[Synchronkartei](https://www.synchronkartei.de/sprecher/1187/2)

City Hunter, Saeba Ryo, after months of idleness, finally scores a client and it is none other than the beautiful Mega City TV newscaster, Sayaka, who fears for her life. What's more, the enemy are her employers who are ready to resort to any means necessary to kill her. Ryo takes on the might of a TV station in a bid to save Sayaka, but finds that all is not what it seems...

Ryo Saeba is a "sweeper" in the city of Tokyo. His works as a trouble shooter, cleaning the streets of vermin, and helping out desperate people. Sometimes he's a bodyguard, sometimes he's an assassin, whatever Ryo does he does it well. In fact his only flaw is his hormones - he loves the ladies and sometimes turns into an idiot when he's near them. Thankfully he's got people like his sidekick Kaori Makimura to keep him in check. 
 
(Source: Anime News Network)

New movie project to commemorate the 35th anniversary of the City Hunter TV anime: The Final Chapter Begins.

Hideyuki Makimura