Watanabe Miyu is an actress and is a dancer at EXPG Osaka. She has one older sister called Rina who participated in LDH's "The Girl Audition" in 2018, too. While participating in LDH's "The Girl Audition" in 2018 as a part of the Actress Category, Takeshi Miike told the contestants that whoever is a successful applicant in the acting category will receive a part in his works. After winning, Miyu managed to get the role of Aiba Tsubasa for "Police x Heroine Lovepatrina"! Aside from being a part of the cast, she is a member of the idol unit they released through the series called lovely²