Yoshiki Tonogai (外海良基, Tonogai Yoshiki?, born March 14) is a Japanese manga artist from Shiga, Japan. He is notable as the illustrator of one of the Higurashi no Naku Koro ni manga adaptations: Himatsubushi-hen. He is also the artist and writer of Doubt, which was completed in February, 2009. He is also the artist and writer of Judge, the sequel to Doubt, which is still ongoing. According to ANN, Doubt is to be published in the US by Yen Press beginning in 2013, and both Doubt and Judge have been licensed in Germany and France and Doubt in the Netherlands.