Black Blood Brothers, also known as BBB, is a light novel series written by Kōhei Azano and illustrated by Yuuya Kusaka. In 2006, Studio Live and Group TAC produced an anime based on the series. It is directed by Hiroaki Yoshikawa. It was licensed for North American release by Funimation Entertainment, with the first DVD being released in February 2008.

Takahiro Sakurai is a Japanese voice actor, narrator, and radio personality from Aichi Prefecture, Japan. His well-known roles include heroes such as Cloud Strife in Compilation of Final Fantasy VII, Suzaku Kururugi in Code Geass, X in Mega Man X, Arataka Reigen in Mob Psycho 100, and Giyu Tomioka in Demon Slayer: Kimetsu no Yaiba as well as villains such as Maximilien Robespierre in Le Chevalier D'Eon, Hiltz in Zoids: Guardian Force, Sasori in Naruto Shippūden, Rohan Kishibe in JoJo's Bizarre Adventure: Diamond is Unbreakable, and Suguru Geto in Jujutsu Kaisen. He voiced the main character Miyuki Kazuya in Ace of Diamond. He is the official Japanese dub voice for Robert Pattinson since Twilight. His range is tenor. Since 2014, he has belonged to the voice actor office INTENTION, but left on March 31, 2023, saying that he caused trouble to the company with the affair report described later.