Name: Ketcha Age: 25 Height: 156cm Role: Teacher First person: I (soft, polite) Second person: -kun for the kids, Guest-sensei for Guest Personality: A reliable teacher, but incredibly clumsy. Great at playing with the kids. Often says "ehehe." Bad at games and serves as the group's coordinator. The one everyone teases. Puts his heart into everything he does. Loves beautiful women (basically, a bit of a pervert). Somehow just adorable.

Name: Atchi Age: 4 Height: 110cm Role: Kindergartener First person: I (energetic, boyish) Second person: -kun for other kids, -sensei for Guest and Ketcha (Guest-sensei, Ketcha-sensei) Personality: Insanely energetic. The mood maker. Almost always frolicking around. Has a loud voice. Loves the teacher and is very clingy.

Name: Mazeta Age: 4 Height: 100cm Role: Kindergartener First person: I (energetic, boyish) Second person: -kun for other kids, -sensei for Guest and Ketcha (Guest-sensei, Ketcha-sensei) Personality: Energetic. Good at singing. A bit of a pervert streak; knows quite a few dirty jokes despite being a kindergartener. Loves the teacher and is very clingy.

Name: Pritz Age: 4 Height: 106cm Role: Kindergartener First person: I (energetic, boyish) Second person: -kun for other kids, -sensei for Guest and Ketcha (Guest-sensei, Ketcha-sensei) Personality: Mood maker. Good at making everyone laugh. Speaks with a heavy regional drawl (Kansai dialect). Loves the teacher and is very clingy.

Name: Chigusa Age: 3 Height: 92cm Role: Kindergartener First person: I (energetic, boyish) Second person: -kun for other kids, -sensei for Guest and Ketcha (Guest-sensei, Ketcha-sensei) Personality: The youngest. An incredibly cute character. However, he gets lonely easily and is a crybaby. Timid. Loves the teacher and is the most clingy of all. Relies on Atto a lot and likes him.

Name: Atto Age: 5 Height: 112cm Role: Kindergartener First person: I (energetic, boyish) Second person: For the kids, he uses two-letter nicknames except for Atchi (e.g., Chigusa → Chigu, Mazeta → Maze). -sensei for Guest and Ketcha (Guest-sensei, Ketcha-sensei) Personality: The oldest. Quiet and dependable. Cool-headed. However, he can actually be a bit airheaded at times. Loves the teacher but doesn't act clingy in front of others. When he gets lonely, he just stares at the teacher. Often helps the fearful Chigusa; he's like a big brother to him.