Quick answer — Takeshi Obata worked on Bakuman. 3 (Original Character Design), Bakuman. 2 (Original Character Design), Bakuman. (Original Character Design) and 5 more anime.
Takeshi Obata worked on Bakuman. 3 (Original Character Design), Bakuman. 2 (Original Character Design), Bakuman. (Original Character Design), Hikaru no Go (Original Character Design), Death Note: Relight (Original Character Design), Blue Literature Series (Original Character Design), Bubble (Original Character Design), Platinum End (Original Character Design).
