
Kazuma Matsuoka
From Blue Box
Kazuma Matsuoka is a supporting character in Blue Box, a badminton player who returned to Japan from studying abroad in America and crosses paths with Eimei's team in competition. Rivals in Blue Box are mirrors, and Matsuoka raises the level of Taiki's road to nationals. He is voiced by Yuki Kaji in Japanese and Ryan Colt Levy in English.
About Kazuma Matsuoka
Kazuma Matsuoka is a badminton player from a rival school who crosses paths with Eimei's team in competition. Rivals in Blue Box are never just obstacles: they are mirrors, showing Taiki versions of the player he could become or fail to become. Matsuoka's appearances raise the level of the badminton storyline, reminding Taiki that the road to nationals runs through players who want it just as badly.
Appearance
Matsuoka carries himself with the ease of a player who has trained abroad, confident, polished and immediately noticeable when he steps onto a court opposite Eimei. His returnee's assurance is part of his challenge: he plays like the wider world Taiki has not yet tested himself against.
Personality
Matsuoka is a rival in Blue Box's mould, never just an obstacle. Players like him show Taiki versions of the player he could become or fail to become, and Matsuoka's level makes the distance to nationals concrete. His appearances raise the badminton storyline's stakes by reminding Taiki that everyone on the other side of the net wants it just as badly.
Background & Story
Kazuma Matsuoka is a badminton player who returned to Japan after studying abroad in America, bringing an overseas-trained game back into Japanese school competition. Crossing paths with Eimei's team, he becomes one of the benchmarks on Taiki's road, the kind of opponent whose existence turns an abstract goal like nationals into a specific, difficult person to beat.
Powers & Abilities
- Badminton, overseas-trained game: Matsuoka's badminton was sharpened by studying abroad in America, giving him a polished, high-level style that tests Eimei's players.
Key Relationships
- Taiki Inomata: A rival on the road to nationals, the level of opponent Taiki must learn to beat.
Quick Answers
Who voices Kazuma Matsuoka?
Matsuoka is voiced by Yuki Kaji in Japanese and by Ryan Colt Levy in the English dub.
Who is Kazuma Matsuoka in Blue Box?
Matsuoka is a badminton player who returned from studying abroad in America and competes against Eimei, a high-level rival on Taiki's road to nationals.










