Idol Tenshi Youkoso Youko (TV Series, 43 episodes, AniDB)

Requested before Jun 2019

Tanaka Youko leaves country life behind to go to Shibuya to fulfill her dream of becoming an idol singer. Traveling with her is her pet flying squirrel Muu. Along the way they meet up with Saki, who has similar plans. They become friends and decide to work together to pursue their dreams of stardom. Source: animemetro.com