
Quick answer — Rui Tanabe voices Mafuyu Asahina in COLORFUL STAGE! The Movie: A Miku Who Can't Sing, Nanana Ryuugajou in Nanana's Buried Treasure, Tobari Haneda in A Misanthrope Teaches a Class for Demi-Humans and 17 more characters.
Rui Tanabe voices Mafuyu Asahina (COLORFUL STAGE! The Movie: A Miku Who Can't Sing), Nanana Ryuugajou (Nanana's Buried Treasure), Tobari Haneda (A Misanthrope Teaches a Class for Demi-Humans), Cecil Sudou (Wizard Barristers), Mako (WONDER EGG PRIORITY), Teto (The Duke of Death and His Maid), Ai Nishimura (One Week Friends), Echika Mizuhara (Saekano: How to Raise a Boring Girlfriend) and 12 more.
Mafuyu Asahina is voiced in Japanese by Rui Tanabe.