Birthplace: Tokyo
Blood type: O

Graduated from Tokyo Metropolitan Musashi Senior High School and Waseda University School of Economics & Political Science.

Received the 2003 Kodansha Manga Award for Shounen (Kunimitsu no Matsuri).

Pennames:
- Agi Tadashi (亜樹 直) - shared with his sister
- Andou Yuuma (安童 夕馬)
- Aoki Yuuya (青樹 佑夜)
- Arimori Jyoji (有森 丈時)
- Igano Hiroaki (伊賀 大晃)
- Kibayashi
- Ryuumon Ryou (龍門諒)
- S.K.
- Seimaru Amagi (天樹 征丸)

Twitter: @agitadashi