Name: Junya Azuma Role: Son of the Azuma family. Smart. Age: 11th grade (High school sophomore) Naoki's older brother. A perfect human being who is good at studying and popular. He works a part-time job and bought matching rings with his girlfriend. He cares about his younger brother, Naoki. He gets a perfect 100 on every test.

Name: Naoki Azuma Role: Son of the Azuma family. Smart, but doesn't get 100 every time. Age: 4th grade (Elementary school) Junya's younger brother. Serious. A quiet boy.

Mother of Junya, Naoki, and Guest. She runs the "Azuma Clinic" and is very dedicated to education. If you get a perfect 100 on a test, the reward is pancakes. If you don't, you get nothing (and those pancakes get thrown away). She has beautiful double eyelids that look like they were drawn on and silky straight black hair.