MAJI DE OTAKU NA ENGLISH! RIBBON-CHAN: EIGO DE TATAKAU MAHOU SHOUJO - THE TV

The story centers around Ribbon-chan, a girl struggling with English who becomes a magical girl when she makes a contract with a self-described familiar named Toner. She aims to become a super heroine who can fill the Tokyo Dome arena with her singing and dancing. (Source: Anime News Network) — Description from AniList community (anilist.co).