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The Best Episodes of Blue Box Season 1

Every episode of Blue Box Season 1 ranked from best to worst. Discover the Best Episodes of Blue Box Season 1!

Binge this in 10h 0m·Peaking at 9.5/10
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Episode Rankings

  1. #1 Fan Favorite
    Blue Box Season 1 Episode 24 - A Roller Coaster
    9.5/10(1664 votes)

    S1:E24

    Hina experiences a roller coaster of emotions over her affection for Taiki and, thanks to Ayame, gets a chance to be alone with him on the last night.

    Director:Yoshiko Okuda
    Writer:Yuko Kakihara

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  2. Blue Box Season 1 Episode 14 - What's the Connection?
    9.2/10(1489 votes)

    S1:E14

    While Chinatsu faces immense pressure at the nationals, Hina cheers up a worried Taiki with a game where the loser shares an embarrassing secret.

    Director:Hitomi Ezoe
    Writer:Yuko Kakihara

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  3. Blue Box Season 1 Episode 15 - August 26
    8.8/10(1146 votes)

    S1:E15

    Despite it being her birthday, Chinatsu still seems a little down. Taiki takes her somewhere special — but the weather might have other plans.

    Director:Takahiro Okawa
    Writer:Yuko Kakihara

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  4. Blue Box Season 1 Episode 18 - I Know
    8.8/10(1034 votes)

    S1:E18

    Sajikawa High arrives for the much-anticipated practice match. As Chinatsu watches from the sidelines, she thinks about how far Taiki has come.

    Director:Daisuke Tsukushi
    Writer:Yuko Kakihara

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  5. Blue Box Season 1 Episode 5 - Aquarium
    8.6/10(1193 votes)

    S1:E5

    With both players going neck and neck on the court, will Taiki win his match against Kishi — and will Chinatsu invite him to the aquarium?

    Director:Keiko Oyamada
    Writer:Yuko Kakihara

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  6. Blue Box Season 1 Episode 12 - Girls...
    8.6/10(1042 votes)

    S1:E12

    Taiki attends the fireworks festival with Hina and is surprised by her new look and shyness. Later, he unexpectedly bumps into Chinatsu with a lost child.

    Director:Keiko Oyamada
    Writer:Yuko Kakihara

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  7. Blue Box Season 1 Episode 6 - Wish Me Luck
    8.5/10(1133 votes)

    S1:E6

    On her way to return Chinatsu's mobile phone, Hina makes a shocking discovery. The gymnast faces mounting pressure while struggling with her new feelings.

    Director:Yasuo Tsuchiya
    Writer:Yuko Kakihara

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  8. Blue Box Season 1 Episode 8 - Score!
    8.4/10(1064 votes)

    S1:E8

    As Taiki strives to make it to the nationals, Chinatsu gives him a word of encouragement. Later, Haryu and Taiki face top players in the doubles match.

    Director:Shunji Yoshida
    Writer:Yuko Kakihara

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  9. Blue Box Season 1 Episode 9 - I'll Be Rooting for You
    8.4/10(1082 votes)

    S1:E9

    Frustrated with his loss to Sajikawa High, Taiki overworks himself studying for midterms and falls ill, when Chinatsu suddenly appears in his room.

    Director:Yuka Yamato
    Writer:Yuko Kakihara

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  10. Blue Box Season 1 Episode 25 - Even So
    8.3/10(897 votes)

    S1:E25

    Ayame faces the consequences of her meddling and tries all sorts of ways to console Hina. Meanwhile, Taiki strengthens his resolve and asks Chinatsu out.

    Directors:Keiko Oyamada, Yasuo Tsuchiya
    Writer:Yuko Kakihara

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  11. Blue Box Season 1 Episode 1 - Chinatsu Senpai
    8.2/10(1511 votes)

    S1:E1

    Despite a few heart-fluttering encounters, Taiki doubts his crush Chinatsu even knows his name. Later, shocking news forces him to make a bold move.

    Director:Keiko Oyamada
    Writer:Yuko Kakihara

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  12. Blue Box Season 1 Episode 3 - Chii
    8.2/10(1175 votes)

    S1:E3

    Taiki overhears Haryu calling Chinatsu by a special nickname and gets flustered. Will it affect his upcoming match against the upperclassman?

    Director:Harume Kosaka
    Writer:Yuko Kakihara

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  13. Blue Box Season 1 Episode 4 - If He Wins
    8.2/10(1133 votes)

    S1:E4

    A gym uniform mix-up leads to a heart-pounding exchange. Later, Haryu raises the stakes for Taiki’s match, while Kyo makes a secret request to Chinatsu.

    Director:Masato Kitagawa
    Writer:Yuko Kakihara

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  14. Blue Box Season 1 Episode 13 - I Want a Back-and-Forth Rally
    8.2/10(986 votes)

    S1:E13

    Taiki worries about a potential misunderstanding after Chinatsu departs. At the badminton nationals, he learns more about Karen and Haryu's relationship.

    Director:Ryosuke Azuma
    Writer:Yuko Kakihara

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  15. Blue Box Season 1 Episode 20 - As One of Her Closest Friends
    8.2/10(914 votes)

    S1:E20

    After a blissful time with Chinatsu, Nishida's ominous fortune comes true! His classmate playing the prince can't perform, so Taiki must take on the role.

    Director:Yuma Suzuki
    Writer:Yuko Kakihara

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  16. Blue Box Season 1 Episode 2 - You Have to Go to Nationals
    8.1/10(1249 votes)

    S1:E2

    Taiki's new housemate quickly makes herself at home. As they grow closer, his attempts to keep the situation a secret cause a misunderstanding.

    Director:Hitomi Ezoe
    Writer:Yuko Kakihara

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  17. Blue Box Season 1 Episode 11 - Uncool!
    8.1/10(983 votes)

    S1:E11

    With the annual fireworks festival approaching, Hina musters the courage to invite Taiki, who's been avoiding Chinatsu since their awkward conversation.

    Director:Mizuki Iwata
    Writer:Yuko Kakihara

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  18. Blue Box Season 1 Episode 16 - Unfair Woman
    8.1/10(912 votes)

    S1:E16

    As a new school term begins, the school buzzes with preparations for the upcoming festival. Chinatsu reflects on her restless feelings towards Taiki.

    Director:Jiro Arimoto
    Writer:Yuko Kakihara

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  19. Blue Box Season 1 Episode 17 - Of Course I Want to See It
    8.1/10(899 votes)

    S1:E17

    Upon learning of an upcoming practice match with Sajikawa High, Taiki worries about facing Yusa gain. Chinatsu and Hina promise their support.

    Director:Yoshiko Okuda
    Writer:Yuko Kakihara

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  20. Blue Box Season 1 Episode 19 - I've Got Plans
    8.0/10(914 votes)

    S1:E19

    Just before the school festival starts, Taiki goes for his usual morning jog and finds Chinatsu practicing nearby. She extends a surprising invitation.

    Director:Keiko Oyamada
    Writer:Yuko Kakihara

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  21. Blue Box Season 1 Episode 22 - Inota!
    8.0/10(844 votes)

    S1:E22

    After learning about Hina's unrequited feelings for Taiki, Ayame decides to help — and the perfect chance arises at the upcoming autumn training camp!

    Director:Risa Suzuki
    Writer:Yuko Kakihara

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  22. Blue Box Season 1 Episode 29 - Love Is the Most Powerful Feeling
    8.0/10(1 votes)

    S1:E29

    Chinatsu walks away, leaving Yumeka to confront her true feelings. Middle school memories come flooding back, revealing how her love for basketball faded.

    Director:Yuichiro Yano
    Writer:Yuko Kakihara

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  23. Blue Box Season 1 Episode 21 - A Chance to Blossom
    7.9/10(874 votes)

    S1:E21

    While rumors swirl around Taiki and Hina, Chinatsu seems unfazed. However, while spending the night at Karen's, the basketballer shares her true thoughts.

    Director:Yuka Yamato
    Writer:Yuko Kakihara

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  24. Blue Box Season 1 Episode 23 - Spinning
    7.9/10(896 votes)

    S1:E23

    An exciting card game with friends leaves Taiki's head spinning. He mulls over his feelings for Chinatsu and Hina as the training camp continues.

    Director:Hitomi Ezoe
    Writer:Yuko Kakihara

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  25. Blue Box Season 1 Episode 7 - Can I Have One?
    7.8/10(1062 votes)

    S1:E7

    Chinatsu overhears rival players speak poorly about her recent game. Later, Hina playfully steals a bite from Taiki — and Chinatsu notices from afar.

    Director:Hitomi Ezoe
    Writer:Yuko Kakihara

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Season 1 Ratings Summary

"A Roller Coaster" is the best rated episode of Blue Box season 1. It scored 9.5/10 from 1,664 votes. Directed by Yoshiko Okuda and written by Yuko Kakihara, it aired on March 20, 2025. This episode is rated 0.3 points higher than the second-best, "What's the Connection?".