Blue Box (2024) · WatchGuide

Blue Box (2024) · WatchGuide

Episodes

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E1 · Airs Oct 3, 2024 · 24m · ★ 8.1
Chinatsu Senpai
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.
E2 · Airs Oct 10, 2024 · 24m · ★ 7.7
You Have to Go to Nationals
Taiki's new housemate quickly makes herself at home. As they grow closer, his attempts to keep the situation a secret cause a misunderstanding.
E3 · Airs Oct 17, 2024 · 24m · ★ 7.3
Chii
Taiki overhears Haryu calling Chinatsu by a special nickname and gets flustered. Will it affect his upcoming match against the upperclassman?
E4 · Airs Oct 24, 2024 · 24m · ★ 7.0
If He Wins
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.
E5 · Airs Oct 31, 2024 · 24m · ★ 7.5
Aquarium
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?
E6 · Airs Nov 7, 2024 · 24m · ★ 8.0
Wish Me Luck
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.
E7 · Airs Nov 14, 2024 · 24m · ★ 7.8
Can I Have One?
Chinatsu overhears rival players speak poorly about her recent game. Later, Hina playfully steals a bite from Taiki — and Chinatsu notices from afar.
E8 · Airs Nov 21, 2024 · 24m · ★ 7.8
Score!
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.
E9 · Airs Nov 28, 2024 · 24m · ★ 7.8
I'll Be Rooting for You
Frustrated with his loss to Sajikawa High, Taiki overworks himself studying for midterms and falls ill, when Chinatsu suddenly appears in his room.
E10 · Airs Dec 5, 2024 · 24m · ★ 6.5
It's Not a Good Thing
After a sleepless night, Taiki asks Haryu for relationship advice. Later, Chinatsu realizes her recent behavior might hinder her dream and trouble others.
E11 · Airs Dec 12, 2024 · 24m · ★ 7.5
Uncool!
With the annual fireworks festival approaching, Hina musters the courage to invite Taiki, who's been avoiding Chinatsu since their awkward conversation.
E12 · Airs Dec 19, 2024 · 24m · ★ 7.5
Girls...
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.
E13 · Airs Jan 2, 2025 · 24m · ★ 7.2
I Want a Back-and-Forth Rally
Taiki worries about a potential misunderstanding after Chinatsu departs. At the badminton nationals, he learns more about Karen and Haryu's relationship.
E14 · Airs Jan 9, 2025 · 24m · ★ 7.0
What's the Connection?
While Chinatsu faces immense pressure at the nationals, Hina cheers up a worried Taiki with a game where the loser shares an embarrassing secret.
E15 · Airs Jan 16, 2025 · 24m · ★ 7.3
August 26
Despite it being her birthday, Chinatsu still seems a little down. Taiki takes her somewhere special — but the weather might have other plans.
E16 · Airs Jan 23, 2025 · 24m · ★ 7.3
Unfair Woman
As a new school term begins, the school buzzes with preparations for the upcoming festival. Chinatsu reflects on her restless feelings towards Taiki.
E17 · Airs Jan 30, 2025 · 24m · ★ 7.0
Of Course I Want to See It
Upon learning of an upcoming practice match with Sajikawa High, Taiki worries about facing Yusa gain. Chinatsu and Hina promise their support.
E18 · Airs Feb 6, 2025 · 24m · ★ 7.3
I Know
Sajikawa High arrives for the much-anticipated practice match. As Chinatsu watches from the sidelines, she thinks about how far Taiki has come.
E19 · Airs Feb 13, 2025 · 24m · ★ 7.3
I've Got Plans
Just before the school festival starts, Taiki goes for his usual morning jog and finds Chinatsu practicing nearby. She extends a surprising invitation.
E20 · Airs Feb 20, 2025 · 24m · ★ 7.3
As One of Her Closest Friends
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.
E21 · Airs Feb 27, 2025 · 24m · ★ 6.7
A Chance to Blossom
While rumors swirl around Taiki and Hina, Chinatsu seems unfazed. However, while spending the night at Karen's, the basketballer shares her true thoughts.
E22 · Airs Mar 6, 2025 · 24m · ★ 7.0
Inota!
After learning about Hina's unrequited feelings for Taiki, Ayame decides to help — and the perfect chance arises at the upcoming autumn training camp!
E23 · Airs Mar 13, 2025 · 24m · ★ 7.0
Spinning
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.
E24 · Airs Mar 20, 2025 · 24m · ★ 7.3
A Roller Coaster
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.
E25 · Airs Mar 27, 2025 · 24m · ★ 6.0
Even So
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.
E26 · Airs Oct 4, 2026 · 24m · ★ 7.5
Déjà Vu
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.
E27 · Airs Oct 11, 2026 · 24m · ★ 6.5
Admiration
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.
E28 · Airs Oct 18, 2026
Episode 28
E29 · Airs Oct 25, 2026
Episode 29
E30 · Airs Nov 1, 2026
Episode 30
E31 · Airs Nov 8, 2026
Episode 31
E32 · Airs Nov 15, 2026
Episode 32
E33 · Airs Nov 22, 2026
Episode 33
E34 · Airs Nov 29, 2026
Episode 34
E35 · Airs Dec 6, 2026
Episode 35
E36 · Airs Dec 13, 2026
Episode 36
E37 · Airs Dec 20, 2026
Episode 37