by Chinatsu Kano has traded her usual school basketball uniform for the purple colors of the Tokyo Sunrockers in a newly drawn collaboration illustration for Blue Box. Fans are loving the unexpected crossover, with many praising how naturally Chinatsu fits the professional basketball team’s look.
The official X account of the Tokyo Sunrockers, a professional basketball club competing in Japan’s B.LEAGUE, has unveiled a special collaboration key visual with the TV anime Blue Box (Ao no Hako). The newly drawn illustration was released ahead of a special collaboration event planned for October 25, 2026, when two of the anime’s main voice actors will appear at the Sunrockers’ home game.
The collaboration brings together two worlds that naturally complement each other: Blue Box’s story of high-school athletes pursuing their dreams while dealing with romance and friendship, and the real-world excitement of professional basketball.
The new illustration features Chinatsu Kano, voiced by Reina Ueda, wearing a Tokyo Sunrockers uniform alongside the club’s official mascot, Sandy. Her purple uniform, basketball, and bright smile have already become a major talking point among fans.
Chinatsu Kano Looks Right at Home in the Sunrockers Uniform
The newly released key visual gives Chinatsu a completely different sporting look from the one fans normally see in Blue Box.
Chinatsu is shown wearing the Tokyo Sunrockers’ purple-based basketball uniform while holding a basketball in one hand. Standing beside her is Sandy, the club’s official mascot, who is also depicted in a playful basketball pose.
The illustration was specifically created for the collaboration, rather than being a reused anime image. The Tokyo Sunrockers confirmed that the key visual uses a newly drawn special illustration of Chinatsu wearing the club’s uniform.
That detail makes the visual particularly appealing to collectors and Blue Box fans, as Chinatsu has been given a design that connects her fictional basketball career directly with an actual professional basketball team.
The purple uniform also creates a striking visual change. Chinatsu is already strongly associated with basketball in Blue Box, but seeing her wearing a professional club uniform makes the crossover feel surprisingly natural.
Sandy adds another layer of charm to the illustration. Rather than simply standing beside Chinatsu, the mascot is shown engaging with the basketball theme, creating a playful contrast with Chinatsu’s more elegant appearance.
Fans Praise Chinatsu’s Purple Uniform
The new illustration quickly attracted attention after it was shared online.
Fans praised Chinatsu’s appearance in the professional uniform, with reactions including comments such as “Chinatsu-senpai looks great in her uniform” and “The purple uniform suits her too.” Others focused on the adorable pairing of Chinatsu and Sandy.
Sandy also received plenty of attention from fans.
Some viewers joked about how dignified the mascot looks in the illustration, while others praised the way Sandy interacts with the Blue Box imagery. One fan reaction even pointed out that Sandy touching the Blue Box logo was a particularly nice detail.
These comments are fan reactions rather than official descriptions, but they show how quickly the new illustration connected with both anime viewers and basketball fans.
The crossover also gives fans something they do not normally get from the anime: an image of Chinatsu representing a real professional basketball club.
Reina Ueda and Shoya Chiba Will Attend the October 25 Game
The collaboration is not limited to artwork.
As part of the special project, Reina Ueda, who voices Chinatsu Kano, and Shoya Chiba, who voices Daiki Inomata, will appear as special guests at the Tokyo Sunrockers’ home game on October 25, 2026.
The game will see the Tokyo Sunrockers face the Nagoya Diamond Dolphins during the 2026-27 B.LEAGUE PREMIER regular season.
The event will take place at TOYOTA ARENA TOKYO in Tokyo.
The appearance of both voice actors makes the collaboration more than a simple promotional campaign. Fans attending the game will have the opportunity to see the voices behind Daiki and Chinatsu participate in an event connected to the sport that plays such an important role in the anime.
Why Blue Box and the Sunrockers Make a Natural Match
The collaboration makes sense because basketball is one of the central elements of Blue Box.
The manga and anime follow Daiki Inomata, a member of the boys’ badminton club at Eimei Junior and Senior High School. Daiki has feelings for Chinatsu Kano, a talented and popular member of the girls’ basketball team.
Chinatsu is one of the strongest basketball players at school and serves as an important source of inspiration for Daiki. Her dedication to practice and competition is also an important part of the series’ coming-of-age story.
The Tokyo Sunrockers say the collaboration was inspired by the similarities between the club’s mission and the themes of Blue Box. The team specifically highlighted the anime’s portrayal of young people passionately pursuing sports and the emotional experiences surrounding those efforts.
That connection is especially appropriate for Chinatsu.
Unlike a character who simply happens to play basketball, Chinatsu’s athletic goals are deeply connected to her personality and development. Her commitment to basketball is one of the major elements that makes her relationship with Daiki more complicated and meaningful.
As a result, placing her in the uniform of a real professional basketball team feels like a natural extension of her character.
What Is Blue Box About?
For viewers who are new to the series, Blue Box is a romantic coming-of-age story created by Kouji Miura.
The manga began serialization in Weekly Shonen Jump and combines sports, romance, friendship,p and school life.
The protagonist is Daiki Inomata, a high-school badminton player who practices at the same school as Chinatsu Kano, the ace of the girls’ basketball team.
Daiki has admired Chinatsu for some time, but their relationship changes dramatically when circumstances bring the two closer together.
One of the series’ defining features is that both characters are serious about their sports careers. Their romantic feelings develop alongside their individual ambitions rather than replacing them.
This gives Blue Box a distinctive balance.
The story is not simply about whether Daiki and Chinatsu will become a couple. It also explores what it means for young athletes to pursue their dreams while dealing with friendships, competition, family expectations, ns and complicated emotions.
For that reason, sports are not just background scenery in Blue Box. Badminton and basketball are essential parts of the characters’ everyday lives.
Chinatsu’s Basketball Role Makes the Collaboration Especially Meaningful
Chinatsu is particularly well suited to a collaboration with a professional basketball club because basketball is central to her identity in the story.
She is introduced as an accomplished basketball player whose dedication makes Daiki admire her even more.
For Daiki, watching Chinatsu practice and compete becomes one of the reasons he wants to work harder at badminton himself.
The two characters therefore represent different sports while sharing a similar mindset: both are young athletes who want to improve and take their goals seriously.
That is also why the new illustration works beyond its promotional purpose.
Chinatsu is not being randomly placed into a basketball uniform. She is being connected to a real team through the sport that defines one of the most important parts of her character.
Blue Box Season 2 Is Also Coming in October 2026
The collaboration arrives at an important time for the anime.
The second season of Blue Box is scheduled to begin in October 2026, continuing the story of Daiki, China Tsu,u and their friends.
The timing means fans will be able to enjoy new anime episodes around the same period as the Tokyo Sunrockers collaboration.
The anime adaptation originally premiered in October 2024 and quickly attracted attention for its combination of sports and romance.
The second season continues that story while bringing the characters into new emotional and athletic situations.
With the anime returning and the Sunrockers collaboration happening at the same time, Chinatsu is receiving particularly strong promotional attention.
A Collaboration That Connects Fictional and Real Basketball
One of the most interesting aspects of this project is the way it connects fictional sports with real competition.
In Blue Box, viewers watch Chinatsu work toward her goals as a high-school basketball player.
At the Tokyo Sunrockers game, fans will instead be watching professional basketball players compete in an actual B.LEAGUE game.
The collaboration effectively places Chinatsu between those two worlds.
The newly drawn illustration provides the visual connection, while Reina Ueda’s appearance at the game brings the anime directly into the arena.
Shoya Chiba’s participation also makes the event more representative of Blue Box as a whole rather than focusing only on Chinatsu.
The October 25 Game Will Take Place at TOYOTA ARENA TOKYO
The special collaboration game will be held at TOYOTA ARENA TOKYO, the Tokyo Sunrockers’ home arena.
The official announcement confirms that the Sunrockers will face the Nagoya Diamond Dolphins on October 25.
The game is part of the 2026-27 B.LEAGUE PREMIER regular season, giving the collaboration a place within the club’s official league schedule rather than making it a separate exhibition event.
The Sunrockers have also been preparing a broader range of experiences around their home games during the 2026-27 season, including arena events and food offerings, reflecting the club’s focus on making games more than just basketball matches.
For Blue Box fans, however, the biggest attraction will undoubtedly be seeing the two main cast members at the arena.
Chinatsu and Sandy Become the Stars of the New Visual
The new collaboration illustration succeeds because it keeps the design simple.
Chinatsu is not given an overly complicated costume or a completely redesigned appearance. Instead, she wears the Sunrockers uniform, holds a basketball, and stands alongside Sandy.
That small change is enough to transform the visual.
Her familiar appearance remains recognizable, while the purple uniform immediately establishes the connection to the professional basketball club.
Sandy’s presence also prevents the image from becoming too serious. The mascot’s energetic pose gives the illustration a playful atmosphere that fits the lighter side of Blue Box.
For fans, the combination creates an image that feels both like Blue Box and like Tokyo Sunrockers.
More Than Just an Anime Collaboration
Anime collaborations with sports teams have become an increasingly popular way to bring fictional characters into real sporting environments.
In this case, the connection is especially straightforward because Chinatsu is already a basketball player.
The collaboration therefore does not require fans to imagine the character participating in an unrelated activity. She is already passionate about basketball, making the Sunrockers uniform feel like a natural fit.
It also gives basketball fans who may not have watched Blue Box an introduction to the series through one of its most recognizable characters.
At the same time, anime fans get a reason to learn more about professional basketball and the Tokyo Sunrockers.
That crossover between audiences is one of the main purposes of the project. The club has stated that it hopes the collaboration can connect anime and basketball fans and create an exciting experience for both groups.
Final Thoughts
The newly drawn Chinatsu Kano x Tokyo Sunrockers illustration has quickly become a favorite among Blue Box fans, and it is easy to see why.
Chinatsu’s purple uniform gives her a fresh appearance without changing the character fans know, while Sandy adds an adorable mascot element to the design.
The collaboration is also more than a single illustration. Reina Ueda and Shoya Chiba will appear at the Tokyo Sunrockers vs. Nagoya Diamond Dolphins game on October 25, 2026, at TOYOTA ARENA TOKYO, bringing the world of Blue Box directly into a real B.LEAGUE game.
With Blue Box Season 2 also arriving in October 2026, the collaboration comes at an exciting time for fans of the anime.
For now, Chinatsu’s new purple uniform is giving fans plenty to talk about—and judging from the reactions, many viewers already think she looks right at home in the Sunrockers colors.
