Satoru is Makoto's younger brother and works as a businessman. Satorou is also a professional shogi player himself, but he abandoned playing shogi after his mother died. He took up shogi again after seeing Shion play. His dream is to one day able to defeat his brother in an official match.

Shion no Ou follows the story of Yasuoka Shion, a 13-year-old Shougi player with a past of tragedy. Shion's parents were brutally murdered in front of her when she was 5 years old. The murderer sat down with her and challenged her to a game of Shougi, after telling her that if she wanted to stay alive she should forget how to speak, and forget what happened that night. <br><br>
Now Shion has entered the realm of female pro Kishi, mute but strong. As her playing gathers more and more attention, so do the questions about her past and the brutal murder she witnessed. Shion's memories slowly come back, and the mystery begins to unravel, thread by thread. 

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Masaya Matsukaze is a Japanese actor, voice actor and radio personality. He was formerly affiliated with Big Apple, Radix Mobanimation Multicye Division and Varoque Works, and is currently affiliated with Aoni Production. He was born in Fukushima Prefecture and is now living in Tokyo. He is married to Emika Umemoto (ex-dental assistant) since August 2003.

Yasuoka Shion lost her parents, and her voice, when she was young...in a murder.<br><br>
She was found amidst a blood-soaked room, and the only hint for the suspect was a Shougi board and one piece: the King. Now, Shion steps into the world of female professional Shougi players. As her popularity and fame slowly rises, so do the questions about her past, particularly the murder case that was never solved.

Satoru Hani