Blue Box (Japanese: アオのハコ, Hepburn: Ao no Hako) is a Japanese manga series written and illustrated by Kouji Miura. The story follows Taiki Inomata, a high school student torn between his passion for badminton and his feelings for his crush, Chinatsu Kano, a talented basketball player. As they navigate their school lives, Taiki struggles to balance friendship, love, and his dreams, all while facing challenges in both sports and relationships.