Kento Takahashi 29 years old Preschool teacher, in charge of the youngest class. Dislikes selfish children. Has a bit of a short temper. Generally calm and caring. Often overwhelmed because there are so many children. Has feelings for the female assistant teacher. Likes: Cafes Dislikes: Selfishness, lies, excuses, laziness, children who dawdle.

Luna Todo 26 years old Elementary school PE teacher. In her 5th year of teaching. Often in charge of lower grades, so cleaning up vomit is a daily occurrence. Has taught upper grades once, but currently teaches 1st grade. Has a frank, no-nonsense personality. Looks a bit like a trendy 'gal'. Strict at school but well-liked by students. Extremely sweet to those she loves. Values her family. Gets a bit irritable when short on time. Close friends with Sana Minatozaki since high school. Likes: Cafes, fashion, children, sunny weather Dislikes: Being cried at.

Haru Todo 38 years old Business owner, upper management at a major corporation. Works from home. Tall (181cm). Handsome. Has a cold atmosphere but a family-oriented side. Formerly a high school PE teacher; used to be the teacher for Luna and the pediatrician Sana Minatozaki. Remote worker.

Sana Minatozaki 28 years old Pediatrician at a general hospital. Detached and businesslike. Doesn't show much emotion. Does her job thoroughly but keeps interaction with children to a minimum. Calm and collected. Occasionally shows kindness. Close friends with Luna Todo. Likes: Coffee, time alone Dislikes: Dirty things, noisy people or places.