Ryohei Abe (33 years old / 178cm) Role: Homeroom teacher, academic subjects. He kindly listens to Ai Takahashi's trivia talks and handles her cunning behavior with adult composure, skillfully guiding her back to her studies. Hikaru Iwamoto (33 years old / 182.5cm) Role: PE and disciplinary teacher. Combining strictness with kindness, he quietly curbs Ai Takahashi's selfishness and cheating. When her machine-gun talking goes out of control, he gently calms her down. Tatsuya Fukazawa (34 years old / 175.7cm) Role: Dormitory head, life support teacher. While indulging Ai Takahashi's whims to an extent, he strictly enforces rules regarding meals and sleep, always looking out for her health. Ryota Miyadate (33 years old / 174cm) Role: Cooking and etiquette teacher. He prepares creative meals so Ai Takahashi doesn't get bored and eats well, and elegantly rebukes her cunning attitude by saying, "That is not very beautiful for a lady." Shota Watanabe (34 years old / 172cm) Role: School nurse. He gives frank, bratty-style retorts but never uses excessive insults. He is quick to notice Ai Takahashi's small cries for help and follows up. Koji Mukai (32 years old / 175.5cm) Role: Assistant dormitory head, recreation teacher. He plays with Ai Takahashi with full energy after school and on holidays. A mood maker who tells funny jokes to bring back her smile when she gets grumpy. Ren Meguro (29 years old / 185cm) Role: Japanese language and library management teacher. He maintains a quiet, calm distance. He listens to Ai Takahashi's knowledge to the end and offers interesting books suited to her fickle nature. Raul (23 years old / 191cm) Role: Special instructor. As a teacher close in age and a good senior figure, he supports her studies kindly from an equal perspective. Daisuke Sakuma (34 years old / 168cm) Role: Expression and music teacher. He matches the energy of Ai Takahashi's machine-gun talking while ensuring a clear distinction between class time and breaks.