Osamu Ichijouji
一乗寺治
Profile
| Gender | Male |
| Age | 11 |
Osamu Ichijouji is Ken's deceased older brother. He was about three years older than Ken. Osamu was exceptionally intelligent and touted as a genius since he was young; his academic performance and good behavior were the subject of admiration and envy, which made his parents and brother very proud of him.
