Hiro Mizushima
, known professionally as , is a Japanese actor, creative director, and writer. He appeared in a number of Japanese TV dramas, including Mei-chan no Shitsuji, Hanazakari no Kimitachi e and Zettai Kareshi. Additionally, he was well known as the protagonist Souji Tendo in the tokusatsu series Kamen Rider Kabuto. Mizushima serves as the co-producer, co-screenwriter and leading actor for the latest film Black Butler which is the live-action film adaptation of the popular manga. His birth name "Tomohiro Saito" is being credited as co-producer in the film. Under his pen name , he wrote his first novel, Kagerou, which was chosen as the winner of the 5th Popular Publishing Grand Prize for Fiction and was published in 2010. Career Mizushima first appeared on Japanese television in 2005, where he played Hiro Misawa, a minor character in the second season of Gokusen. In the same year, he found guest starring roles in Japanese dramas such as Ame to Yume no Ato ni and a small role in the TBS drama Brother Beat. In 2006, Mizushima became a main character in the series Kamen Rider Kabuto and acted in the lead role in the film Kamen Rider Kabuto: God Speed Love.