Blue Box (Ao no Hako) is an ongoing shounen romance, sports, and slice-of-life manga written and illustrated by Miura Kouji, serialized in Shueisha's Weekly Shōnen Jump. It follows Taiki Inomata, a dedicated junior-high badminton player at the sports powerhouse Eimei Academy, who harbors a quiet but intense crush on Chinatsu Kano — a talented first-year high schooler and rising star of the girls' basketball team.

What makes Blue Box stand out is its masterful blend of slow romance, coming-of-age drama, and genuine athletic heart. When a twist of fate leads Chinatsu to move in with Taiki's family, their senpai-kouhai relationship and cohabitation dynamic create constant tension between friendship and deeper feelings. Themes of rivalry, personal growth, love triangles, and the grind of school club life in both badminton and basketball are woven together with warmth and humor that fans of Cross Game, Baby Steps, and Suzuka will instantly recognize.

With 243 chapters and counting, Blue Box offers an optimistic, emotionally rich reading experience beloved by fans worldwide. Read every chapter in high quality and stay up to date as the story unfolds — new chapters are updated regularly.