
Quick answer — Masao Ookubo worked on Record of Ragnarok II Part 2 (Director), Record of Ragnarok II (Director), Tonari no Seki-kun: The Master of Killing Time (Storyboard) and 1 more anime.
Masao Ookubo worked on Record of Ragnarok II Part 2 (Director), Record of Ragnarok II (Director), Tonari no Seki-kun: The Master of Killing Time (Storyboard), Record of Ragnarok (Director).