Takei joined Toho in 2009, and has been involved in animation production since 2013. His major producing titles include ‘Himouto! Umaru-chan’ (2015), ‘Little Witch Academia’ (2017), ‘Land of the Lustrous’ (2017), ‘HELLO WORLD’ (2019), ‘BNA: Brand New Animal’ (2020), ‘TRIGUN STAMPEDE’ (2023), and ‘BLUE GIANT’ (2023), ‘Kaiju No.8’ (2024) among others.