Riho Sayashi (鞘師里保 Sayashi Riho, born May 28, 1998 in Hiroshima, Japan ) is a Japanese pop singer under Hello! Project. She is a ninth generation member of the Japanese pop group Morning Musume, along with Mizuki Fukumura, Erina Ikuta, and Kanon Suzuki. Her uncle, Tomoya Sayashi, is a former Japanese baseball player of the Hiroshima Toyo C...