Shiori Makino is the homeroom teacher for Yukinojou Yukimura and Serina Kasuga's class at Kashima school. A zealous educator, she takes responsibility for guiding the recognized problem child Yukinojou, driven by a strong sense of duty and responsibility that embodies the ideal of a dedicated female teacher. She combines notable intelligence with pronounced maternal instincts within her teaching methodology.

She interacts with students through gentle supervision and offers active assistance when needed. Makino maintains a supportive presence for pupils facing difficulties, including Yukinojou, extending her commitment beyond academics into practical support like driving students, demonstrating involvement in their lives outside the classroom.

Physically, Makino has green hair reaching at least chest length and green or blue-green eyes. She consistently wears glasses. Her typical professional attire includes a blazer, shirt, skirt, and thigh-high stockings, presenting as a young adult.

Her personality integrates kindness and approachability with a relaxed demeanor, facilitating connections with students while upholding professional boundaries. She demonstrates competence in everyday skills like cooking. Her character functions within Kashima school's educational framework, focusing on student development and classroom management.