Yoshiki Tonogai is a manga artist from Shiga, Japan. His is best known for 'Himatsubushi-hen', one of the manga adaptations of the murder mystery anime 'When They Cry'. He created his own horror manga 'Doubt' for Monthly Shônen Gangan between December 2007 and February 2009. It was published in Japan by Square Enix and has also been released in the US, Germany, France and the Netherlands. Tonogai subsequently started a follow-up to the serial, called 'Judge'.