Aoki Tachibana is an 18-year-old high school student attending Mizube High. He has messy blonde hair with neatly shaved sides, yellow eyes, and black glasses. He is 5'11.3. Aoki was born to an upper-middle-class family who had extremely high expectations for him. His mother wants him to become a professor, meanwhile his father wants him to become a businessman. He was dubbed as 'gifted' as a child and always pushes himself to be the very best at everything.