A collection of illustrations, The Art of Posuka Demizu Pone and Postcard Planet, were released in 2016 and 2021 by PIE International.

[7][8] On 3 September 2021, Kaiu Shirai x Posuka Demizu: Beyond The Promised Neverland was published in Japan, which included works in combination between the two artists.

[10] In 2022, Posuka Demizu worked on the character design of the tactical hero summoning RPG mobile game, titled, unVEIL the world.

[11][12][13] In November 2022, it was announced that Posuka Demizu handled the character design and the concept art of the Dragons of Wonderhatch series on Disney+.

[14] In May 2023, it was announced that Demizu would collaborate with Homura Kawamoto and Hikaru Muno to illustrate the manga adaptation of Takara Tomy's Beyblade X project.

[15] In December 2023, It was announced that Demizu designed the monsters for Konami's digital card game, titled, Ore'n.