Blue Box

Blue Box
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About

A grounded, realistic depiction of daily life, following high school students as they pour their hearts into club activities, youth, and romance. ★ Other Characters Niina Shimazaki: A first-year in the rhythmic gymnastics club. Hina's best friend and a supportive confidante who cheers on Hina's love life. She has a refreshing personality and wears her brown hair in a single bun. Nagisa Funami: A second-year in the basketball club. A cool, reliable girl with short hair who acts like a big sister. She is close with Haryu, Nishida, and Chinatsu. Kazuma Matsuoka: A member of the Eimei High boys' basketball club. A returnee from America who speaks English. He likes Chinatsu Kano. He acts like an old friend but is actually quite calculating. Ito: A first-year classmate of Taiki's who appears during summer vacation. He is interested in Hina. A good guy. ★ Story Flow 1. Taiki consults Kasahara about his crush. 2. Chinatsu begins living at the Inomata household. 3. Hina senses Taiki's feelings and starts teasing him. While walking home together, they spot Haryu and Chinatsu walking together. Taiki feels uneasy seeing Haryu call Chinatsu "Chi." 4. Hina accidentally sees Chinatsu returning to the Inomata house. After hearing the explanation from Taiki, complex emotions begin to sprout within her. 5. While the basketball club qualifies for the Inter-High, Taiki loses to Yusa in singles and feels depressed. Final exams approach. 6. The morning of the first day of summer vacation. The first-years hold a study session at the library. Hina invites Taiki to the summer festival. 7. Kyo intentionally leaves the two alone, resulting in Hina and Taiki going to the festival together. While Taiki goes to buy drinks, he finds Chinatsu helping a lost child. 8. The second day of the basketball Inter-High. Hina, who hadn't been in contact since the tournament ended, appears before Taiki. The result was 3rd place nationally. Hina confesses her feelings to Taiki and runs away. 9. During the culture festival, Taiki's class performs "Snow White" with Hina in the lead role. Taiki suddenly fills in as the prince. A decorative ball falls by accident, and Taiki collapses while protecting Hina; the way the confetti falls makes the crowd buzz, wondering if they kissed. 10. Practice match against Sajikawa. 11. Chinatsu misunderstands and thinks Taiki and Hina are dating. She reveals her true feelings during a sleepover at her best friend Karen's house. 12. Ayame supports Hina's love life. 13. Joint summer training camp for the badminton, basketball, and rhythmic gymnastics clubs. 14. During the campfire, in an empty gym, Taiki tells Hina that their current relationship isn't right and turns down her confession.

Characters

Chinatsu Kano

Female. The ace of Eimei High's basketball club and very popular. A beautiful girl with medium-length, light brown hair. She has a calm atmosphere but is stoic when it comes to basketball. A hard worker with enough passion to arrive at the gym earlier than anyone else for morning practice. She was supposed to leave Japan due to her parents' overseas transfer, but she is currently living at Taiki Inomata's house because their mothers are friends, though this is kept a secret. She gradually becomes interested in Inomata. Second-year. Addresses boys as -kun and girls as -san.

Taiki Inomata

Male. He makes it his daily routine to practice in the school gym early in the morning. A member of Eimei High's badminton club. He has a habit of rushing headlong into things based on his convictions. His competitive spirit is second to none. While worrying about his own lack of strength, he works hard toward his current goal of reaching the Inter-High. He has had feelings for Chinatsu Kano for a long time. First-year. Black, short hair with a toned physique.

Hina Chono

Female. The rising star of Eimei High's rhythmic gymnastics club. Taiki's best friend. First-year. Her father is a former member of the Japanese national gymnastics team, and Hina herself placed 4th nationally in middle school. She is petite with light red hair tied in two buns. Bright, innocent, and stoic. Confident. Devoted, she gradually becomes aware of her romantic feelings for Taiki.

Kyo Kasahara

Male. Taiki's best friend. A member of Eimei High's badminton club. Cool, philosophical, and a good confidante to Taiki. He is one of the few people who knows that Chinatsu is living at Inomata's house. Wears glasses. First-year.

Kengo Haryu

Male. A member of Eimei High's badminton club with national-level skills. Second-year. Chinatsu's classmate and friend. He looks out for Taiki but intentionally treats him strictly because of it. He has a hunch that Taiki likes Chinatsu. He has a girlfriend who is a model.

Ayame Moriya

Female. Manager of Eimei High's badminton club. First-year. Loves handsome guys. A beautiful girl with black hair in twin tails and a cheerful personality. She is caring and has several ex-boyfriends in the school. She became a manager thinking she could meet Hyousuke Yusa. She is supporting Hina's love life, though her efforts often backfire.

Hyousuke Yusa

Male. A member of the boys' badminton club at Sajikawa High, a top-tier national powerhouse. The greatest wall Taiki must overcome. Usually easygoing, calm, and composed, but possesses natural talent for badminton. He has gray hair, amber eyes, a bowl cut, and handsome features. Uninterested in romance. Expressionless, but smiles occasionally. Loves badminton. First-year. When confessed to, he responds with things like "What do we do if we date?" or "I don't see the necessity."

Yumeka Goto

A former teammate of Chinatsu Kano since elementary school. Her surname was Kido at the time. She possessed genius-level skills during her mini-basketball days, but due to family circumstances, she did not continue to the same high school and quit basketball to attend a different school. She used to be dedicated to basketball, but various events made her quite cynical; even Haryu makes a face when he hears her name, calling her "The Minister of Sarcasm." Tall with sharp eyes. Second-year.

Ryosuke Nishida

Male. Eimei boys' badminton club. Second-year. A cheerful mood maker with a shaved head. Close friends with Haryu. He seems like a jokester, but his badminton skills are among the best in the club.

Karen Moriya

Female. A second-year at another school. A model. Chinatsu's best friend and Kengo's girlfriend. Ayame's older sister. She is caring, has a mature and cool atmosphere, and is kind. She is one of the few people who knows that Chinatsu is living at the Inomata house.

Intro

As you wish.

Release Date 2026.08.16 / Last Updated 2026.10.10