Written and illustrated by Kouji Miura, Blue Box (Japanese: アオのハコ, Hepburn: Ao no Hako) is a modern shonen masterpiece that balances the intensity of the gym with the subtler rhythms of a budding romance. It has earned widespread acclaim for its clean, expressive art style and its sincere depiction of adolescent ambition. The series serves as a dual journey of self-improvement and emotional discovery, proving that the road to the nationals and the road to a first love are often one and the same.

The story follows Taiki Inomata, whose morning routine involves watching Chinatsu Kano practice basketball from across the court. His distant admiration turns into a complicated reality when Chinatsu moves into his house due to their parents' long-standing friendship. Despite the potential for scandal and distraction, the two find common ground in their shared athletic discipline. As Chinatsu works to leave a legacy on the basketball court, Taiki pushes his limits in badminton, determined to prove that he is more than just a housemate—he is a contender worthy of her heart.

Alternative Names by Language
アオのハコ / Blue Box / La Caja Azul / Голубая шкатулка / الصندوق الأزرق / กล่องรักวัยใส / 青春之箱 / 青春之箱 / 푸른 상자