After working as a production manager at the anime studio GAINAX, he wrote his first screenplay for “Panty & Stocking with Garterbelt” and “Gurren Lagann Parallel Works 2”. Thereafter he wrote the screenplay for “Attack on Titan” series and went on to become a freelancer. He has worked on the screenplay and series composition for “BANANA FISH”, “JUJUTSU KAISEN”, “Attack on Titan the Final Season”, and more.