The youth romance and intense badminton matches are ready for the next serve. The production committee of the animated adaptation of Blue Box (Ao no Hako) released an emotional promotional trailer and a beautiful visual image for its highly anticipated second season, confirming that the series will officially premiere on October 4, 2026.

The new promotional image shows Chinatsu Kano lying on the snow in a rather melancholic winter landscape, staring straight ahead and hinting at the dramatic tone this sequel will take. Meanwhile, the main trailer begins by showing the closeness between Taiki Inomata and Chinatsu before introducing Yumeka Kido, a new character who will stir up trouble and add emotional complications to the group. The trailer reveals the changing seasons and how the feelings and sports pressures among the protagonists evolve as the story progresses.

The music for this installment also promises to move fans of the anime industry. Singer aiko will perform the opening theme titled “Anata no Hana no Iro,” sharing that the song aims to capture those youthful feelings of secret letters and school romances. On the other hand, the group Elsewhere Kikou (Glass no Knife) debuts in animated productions with the ending theme titled “blue in,” hoping to add an extra layer of comfort and emotional depth to each episode.

For this continuation, animation production passes to the studio Electric Circus. In the director’s chair is Daisuke Sako (known for his work on Lupin ZERO), while Yuko Kakihara (The Apothecary Diaries) returns to oversee the scripts. Character design and main animation direction remain under Miho Tanino (Tower of God), with music composed by Takashi Ohmama and production supervision under the label UNLIMITED PRODUCE by TMS.

Voice Cast

• Shoya Chiba as Taiki Inomata.
• Reina Ueda as Chinatsu Kano.
• Akari Kito as Hina Chono.
• Chiaki Kobayashi as Kyo Kasahara.
• Yuma Uchida as Kengo Haryu.
• Yoshino Aoyama as Yumeka Kido (New addition).
• Shogo Sakata as Ryosuke Nishida.
• Anna Nagase as Nagisa Funami.
• Asaki Yuikawa as Niina Shimazaki.
• Yuki Ono as Shota Hyodo.
• Kensho Ono as Shuji Yusa.
• Kana Ichinose as Ayame Moriya.
• Yuki Kaji as Kazuma Matsuoka.

About Blue Box

Created by Koji Miura, the original manga began as a standalone chapter in the Weekly Shonen Jump magazine in August 2020, starting its formal serialization in April 2021 until its emotional final chapter, number 250, published on July 13, 2026. The work has surpassed ten million copies in circulation and follows Taiki Inomata, a dedicated badminton player who admires Chinatsu Kano, the star of the women’s basketball team. Their lives become completely intertwined when she moves in with Taiki’s family, beginning a cohabitation filled with personal growth, romance, and intense school competitions. With the conclusion of the printed work, the sequel has all the material needed to adapt the ending of this acclaimed gem.

With the arrival of Yumeka Kido and the new obstacles on Taiki and Chinatsu’s path, do you think this second season will surpass the emotional impact of the first installment and become one of the best romances of the season?