​Ball Design is a design collective formed by Bumpei Kii, Masataka Kikuchi, and Shunsuke Saito. With graphic design at its core, the collective works across a wide range of fields, including book design, logo design, branding, exhibition design, music packaging, and signage. Kii and Kikuchi primarily focus on books and printed materials, while Saito specializes in logos and visual identities. Drawing on their individual expertise, the three work flexibly according to the scale and nature of each project.