Riho Sayashi is a Japanese singer and dancer, best known as a former member of the popular girl group Morning Musume. Born on May 28, 1998, in Fukuoka, Japan, she joined the group in 2011 as part of the 10th generation and quickly gained recognition for her talent and charisma. During her time with Morning Musume, Riho contributed to several successful albums and singles, showcasing her skills in both singing and performance. She graduated from the group in 2016 to pursue a solo career, continuing to engage fans with her music and dance performances.