Blue Box

Season 1

2024 · 37 episodes · 12h 0m in all · 7.3/10

Episodes

1. 

   1. Chinatsu Senpai

   3 Oct 2024 · 24 min · 8.1/10

   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.

2. 

   2. You Have to Go to Nationals

   10 Oct 2024 · 24 min · 7.7/10

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

3. 

   3. Chii

   17 Oct 2024 · 24 min · 7.3/10

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

4. 

   4. If He Wins

   24 Oct 2024 · 24 min · 7.0/10

   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.

5. 

   5. Aquarium

   31 Oct 2024 · 24 min · 7.5/10

   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?

6. 

   6. Wish Me Luck

   7 Nov 2024 · 24 min · 8.0/10

   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.

7. 

   7. Can I Have One?

   14 Nov 2024 · 24 min · 7.8/10

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

8. 

   8. Score!

   21 Nov 2024 · 24 min · 7.8/10

   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.

9. 

   9. I'll Be Rooting for You

   28 Nov 2024 · 24 min · 7.8/10

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

10. 

    10. It's Not a Good Thing

    5 Dec 2024 · 24 min · 6.5/10

    After a sleepless night, Taiki asks Haryu for relationship advice. Later, Chinatsu realizes her recent behavior might hinder her dream and trouble others.

11. 

    11. Uncool!

    12 Dec 2024 · 24 min · 7.5/10

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

12. 

    12. Girls...

    19 Dec 2024 · 24 min · 7.5/10

    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.

13. 

    13. I Want a Back-and-Forth Rally

    2 Jan 2025 · 24 min · 7.2/10

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

14. 

    14. What's the Connection?

    9 Jan 2025 · 24 min · 7.0/10

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

15. 

    15. August 26

    16 Jan 2025 · 24 min · 7.3/10

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

16. 

    16. Unfair Woman

    23 Jan 2025 · 24 min · 7.3/10

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

17. 

    17. Of Course I Want to See It

    30 Jan 2025 · 24 min · 7.0/10

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

18. 

    18. I Know

    6 Feb 2025 · 24 min · 7.3/10

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

19. 

    19. I've Got Plans

    13 Feb 2025 · 24 min · 7.3/10

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

20. 

    20. As One of Her Closest Friends

    20 Feb 2025 · 24 min · 7.3/10

    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.

21. 

    21. A Chance to Blossom

    27 Feb 2025 · 24 min · 6.7/10

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

22. 

    22. Inota!

    6 Mar 2025 · 24 min · 7.0/10

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

23. 

    23. Spinning

    13 Mar 2025 · 24 min · 7.0/10

    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.

24. 

    24. A Roller Coaster

    20 Mar 2025 · 24 min · 7.3/10

    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.

25. 

    25. Even So

    27 Mar 2025 · 24 min · 6.0/10

    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.

26. 

    26. Déjà Vu

    4 Oct 2026 · 24 min · 7.5/10

    Taiki and Chinatsu's outing kicks off at a sports shop. But when an uninvited guest crashes their cafe plans, Taiki hears a name he won't soon forget.

27. 

    27. Admiration

    11 Oct 2026 · 24 min · 6.5/10

    After a tense run-in with Yumeka, Chinatsu opens up about their past on the train ride home. Taiki sets out to learn what tore apart their friendship.

28. 

    28. They're One and the Same

    18 Oct 2026 · 24 min · 7.0/10

    Yumeka snaps at Taiki for overstepping while a teammate's harsh words stir up old memories for Chinatsu. Later, a chance encounter catches her off guard.

29. 

    29. Love Is the Most Powerful Feeling

    25 Oct 2026 · 24 min · 7.5/10

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

30. 

    30. It's Back

    8 Nov 2026 · 24 min

    It's Christmas Eve and Yumeka watches from the stands as Chinatsu takes the court at the Winter Cup. Can Taiki's plan help mend their broken relationship?

31. 31

    31. Episode 31

    Airs 15 Nov 2026

32. 32

    32. Episode 32

    Airs 22 Nov 2026

33. 33

    33. Episode 33

    Airs 29 Nov 2026

34. 34

    34. Episode 34

    Airs 6 Dec 2026

35. 35

    35. Episode 35

    Airs 13 Dec 2026

36. 36

    36. Episode 36

    Airs 20 Dec 2026

37. 37

    37. Episode 37

    Airs 27 Dec 2026