Koki Koyasu
Biography
Koki Koyasu is a Japanese voice actor. He is the son of popular voice actor Takehito Koyasu and a member of his agency T's Factory.
Known For & Full Filmography11 Titles
Drama Series - 2016, 16 episodes • as Roswaal B. Mathers (voice)
Natsuki Subaru, an ordinary high school student, is on his way home from the convenience store when he finds himself transported to another world. As he's lost and confused in a new world where he doesn't even know left from right, the only person to reach out to him was a beautiful girl with silver hair. Determined to repay her somehow for saving him from his own despair, Subaru agrees to help the girl find something she's looking for.
Drama Series - 2024, 16 episodes • as Male Student A (voice)
In a bet to prove whether ghosts or aliens exist, two high schoolers face terrifying paranormal threats, gain superpowers and maybe even fall in love?!
Drama Series - 2022, 16 episodes • as Kai (voice)
Ko's new companion, Nazuna, could offer him dark gifts and a vampire's immortality. But there are conditions that Ko must meet before he can sink his teeth into vampirism, and he'll discover just how far he's willing to go to satisfy his desires.
Drama Series - 2020, 16 episodes • as Male Classmate A (voice)
To be united with her crush, a hopeless romantic summons the ghost in the girls' bathroom at her school. But she's shocked when the ghost is a boy!
Drama Series - 2019, 16 episodes • as (voice)
After a demon attack leaves his family slain and his sister cursed, Tanjiro embarks upon a perilous journey to find a cure and avenge those he's lost.
Drama Series - 2020, 16 episodes • as Nomura (voice)
Ninth grader Yotsuya Yuusuke is practical, friendless, and not active in any clubs. Then one day, he and two female classmates are suddenly sent to another world where they must work together to battle for their lives. Yotsuya is a lone wolf and has always lived his life according to his wants, but how will that work out now that he’s supposed to be a hero?!
Drama Series - 2020, 16 episodes • as Maccahee (voice)
Ninth grader Yotsuya Yuusuke is practical, friendless, and not active in any clubs. Then one day, he and two female classmates are suddenly sent to another world where they must work together to battle for their lives. Yotsuya is a lone wolf and has always lived his life according to his wants, but how will that work out now that he’s supposed to be a hero?!
Drama Series - 2021, 16 episodes • as Camellia Soldier (voice)
Despite the constant threat of invasion by neighboring countries who covet Hortensia’s fertile lands, Hortensia has long managed to avoid the maelstrom of war thanks to its two main territories, the principalities of Olivier and Camelia, serving as its sword and shield. But on December 5, 767, Camelia suddenly rises in revolt against Hortensia...
Drama Series - 2021, 16 episodes • as Soldier (voice)
Despite the constant threat of invasion by neighboring countries who covet Hortensia’s fertile lands, Hortensia has long managed to avoid the maelstrom of war thanks to its two main territories, the principalities of Olivier and Camelia, serving as its sword and shield. But on December 5, 767, Camelia suddenly rises in revolt against Hortensia...
Drama Series - 2021, 16 episodes • as Church Knight (voice)
Despite the constant threat of invasion by neighboring countries who covet Hortensia’s fertile lands, Hortensia has long managed to avoid the maelstrom of war thanks to its two main territories, the principalities of Olivier and Camelia, serving as its sword and shield. But on December 5, 767, Camelia suddenly rises in revolt against Hortensia...
Drama Series - 2026, 16 episodes • as Oizumi Aoi
A newbie editor joins the erotic-fiction desk at “France Publishing,” guided (and flustered) by her eccentric boss. In the digital era, the team fights to prove the value of print sensual literature and grows up in the process.