Mutsuko Shimokamiyama is the new teacher at Fuu Sawatari's high school. She steps into the role of official advisor when the Photography Club forms, bringing an excitable and supportive energy to her position. Mutsuko actively champions the club members, particularly Fuu Sawatari and Kanae Mitani, urging them to enter photography contests and exhibitions. She specifically suggests they participate in a contest focused on sakura trees. Her support extends to school events, including helping the club prepare for a public presentation where they performed a song about photography during a school festival. She consistently fulfills this advisory role throughout the club's documented activities.