Riku Masuda is a Japanese voice actor born in Tokyo on March 22, 2002. She is affiliated with both Digital Double and Just Production. Her career began in 2020 when she became a part of the mixed-media project PuraOre! Pride of Orange, appearing in related programming on the project's YouTube channel starting in December of that year. This project led to her official voice acting debut in 2021, when she was cast as Manaka Mizusawa in the television anime adaptation of PuraOre! Pride of Orange. This role also marked her first time as a lead actress in an anime series. Following her debut, she voiced a small role as a panda in the 2022 series The Vampire Dies in No Time and as a gray child in the 2023 anime Chii-chan wa Chii-chan. In March 2023, Masuda announced a temporary hiatus from her entertainment activities.