Daisuke Yamaguchi is a photographer for the  _Weekly Mahjong Today_ magazine and a supporting character in the manga &quot;Saki&quot;. He regularly travels with news reporter Junko Nishida to prefectural and national high school mahjong tournaments to interview players. He is the first to suggest a relation between Kiyosumi High School&#039;s Saki Miyanaga and Shiraitodai High School&#039;s Teru Miyanaga.

Miyanaga Saki is a first year high school girl whose family would get angry if she won the family mahjong games. But losing would also have its consequences. Because of this she develops a new way of playing that allows her to stay on the thin line between winning and losing, the plus/minus zero score, an almost impossible score. In a game that relies mainly on luck, the plus/minus zero score is harder than winning, but Saki can achieve this every time. Having always hated the game, her friend from middle school, Suga Kyotoro, forces her to play in the schools mahjong club. Her developed skill and superhuman luck has made her a worthy mahjong opponent, even to the middle school's national mahjong champion. (Source: Anime News Network, edited)

He is a voice actor and actor affiliated with Across Entertainment.

[Profle](http://across-ent.com/talent/men/tsuyoshi_koyama.html) | [Blog](https://blog.goo.ne.jp/koyamap) | [Twitter](https://twitter.com/_higetter_) | [Anison](http://anison.info/data/person/22799.html) | [Wiki (en)](https://en.wikipedia.org/wiki/Tsuyoshi_Koyama) | [Wiki (jp)](https://ja.wikipedia.org/wiki/%E5%B0%8F%E5%B1%B1%E5%89%9B%E5%BF%97)

Saki's never been a big fan of mahjong. A lifetime of being forced to play with family at holidays (and losing her money as a consequence...) has left a foul taste for the game in her mouth. When she's convinced, though, to play a game with her classmates, she discovers that not only has fending off her family left her with an uncanny ability for the game but, more surprisingly, that it can even be fun!
 
Is this revelation enough to cleanse Saki's distaste for the game? Can her classmates convince her to join their club, or is there just too much baggage to make it worth her while?
 
(Source: Yen Press)