Black Shaft is the american junior champion taking part in the world championships. After seeing Takane Ryuuji's Boomerang Hook, he became scared and wanted to get rid of the japanese team. Therefore he set up a little match against Japan to test if they are worthy of the world. Shaft doesn't want to box at all and gathers a death row prisoner (Monster Jail), a woman that makes everyone fall in her charm (Miss Channel), the leader of fiction hells angels, a superstar and Shaft him self. Shaft uses all kinds of dirty tricks to win, however he is quite good. Mastering the legendary cork screw blow nicknamed &quot;Black Screw&quot;. He proves himself to be quite an opponent and his title isn't for naught.

In order to fulfill their dead father's wish, the siblings, Kiku Takane and Ryuuji Takane aim for the champion title of the boxing arena. The sister, Kiku, will act as the trainer while her brother, Ryuuji, will concentrate on the role of the boxer and learn the Boomerang Hook technique. His battle with many rivals has led to the growth and maturity of Ryuuji. The junior high boxing tournament has began and Ryuuji will be fighting his arch-rival, Jun Kenzaki. The battle begins.
 
(Source: Anime News Network)

[Blog](http://koyap.jugem.jp/) | [Agency Profile](https://tsf-official.com/talent/takehito-koyasu/)

Koyasu is the most prolific voice actor in the industry, having been credited for over 700 roles as of April 2022.

Growing up, Koyasu skipped out on going to school to watch movies at home because he wanted to become an actor. It wasn’t until later that he became interested in voice acting after having seen [Galaxy Express 999](https://anilist.co/anime/1491/). After graduation he entered a voice acting school. In 1988, he made his voice acting debut, and got his first regular role a year later voicing [Gai](https://anilist.co/character/13374/) in [Tenkuu Senki Shurato](https://anilist.co/anime/2113/).

Though having voiced more characters in the medium than anyone else, he is probably most known for his role as [Dio Brando](https://anilist.co/character/4004/) in [JoJo’s Bizarre Adventure](https://anilist.co/anime/14719/). He has stated that he likes playing villainous characters.

Koyasu has taken over many of [Kaneto Shiozawa](https://anilist.co/staff/95424/)’s roles after Shiozawa’s passing.

Father of [Kouki Koyasu](https://anilist.co/staff/219102/).

__Non-Anime Roles:__

- Olivert Reise Arnor - The Legend of Heroes Series (VG)
- More - Metaphor: ReFantazio (VG)
- Mustang - Goddess of Victory: Nikke (VG)

Immediately after Ryuuji Takane won the Champion Carnival, the U.S. Junior Champion Black Shaft appeared, and challenged the best Japan has to offer, just before the World Tournament is about to happen. Now Ryuuji, Takeshi Kawai, Kazuki Shinatora, Ishimatsu Katori, and Superstar Jun Kenzaki have to prove to not only Black Shaft, but the world, that they are truly world-class boxers before the World Tournament starts. But Shaft is not recruiting boxers for his challenge, but instead gets a life-timer criminal from Death Row, the leader of the Great Angels, one of the toughest gangs in America, a mysterious woman, and the "Dark Emperor of the South". Also, Shaft negotiates with Don Giuliano, the Italian Junior Champion, just in case...
 
(Source: Anime News Network)

Takane Kiku and Takane Ryuji are the children of a legendary world contender boxer. Kiku, the daughter seems to have inherited her father's boxing sense and tries to teach Ryuji to become a world contender. However, Ryuji hates boxing and gets picked on. After Kiku and Ryuji leave their hometown for Tokyo, Ryuji eventually learns to discover a passion for boxing after an encounter with a boxing prodigy, Kenzaki Jun. This will eventually lead him to learn crazy moves and out of this world opponents to become one of Japan's top junior boxers. 
(Source: Anime News Network)

At the end of Ring ni Kakero 1, Ryuuji Takane went up against Superstar Jun Kenzaki for the World Title. Now, 17 years later, Rindo Kenzaki, the son of Jun Kenzaki and nephew of Ryuuji Takane, lives with Ishimatsu Katori, the "Kenka Champion" from Ryuuji and Jun's time. Rindo will meet up with a new generation of boxers to create a new Golden Japan Jr. to take on the world. 
(Source: Anime News Network)