Mari Mizuno

Mari Mizuno serves as the class representative of Year 2-A at Yasaka Private High School and acts as the tactical brain within the three-person Adagaki Aki Imperial Guard. Recognizable by her red-framed glasses and white hair ribbon, she holds an exceptionally strong sense of loyalty toward Aki. She regards Masamune Makabe—who attempts to get close to Aki—as a thorn in her side, and uses her composed intellect to devise various schemes to obstruct him, all in the name of preserving Aki's peaceful life. She stands out in the series as a distinctly guardian-oriented support character.