Blue Box (2024)

EP 1 ★ 8.7 ⏱ 24 min

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.

Season 1

S1 • E1

EP 2 ★ 8.0 ⏱ 24 min

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.

Season 1

S1 • E2

EP 3 ★ 7.6 ⏱ 24 min

Chii

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

Season 1

S1 • E3

EP 4 ★ 7.4 ⏱ 24 min

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.

Season 1

S1 • E4

EP 5 ★ 7.8 ⏱ 24 min

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?

Season 1

S1 • E5

EP 6 ★ 8.5 ⏱ 24 min

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.

Season 1

S1 • E6

EP 7 ★ 8.5 ⏱ 24 min

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.

Season 1

S1 • E7

EP 8 ★ 8.5 ⏱ 24 min

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.

Season 1

S1 • E8

EP 9 ★ 8.3 ⏱ 24 min

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.

Season 1

S1 • E9

EP 10 ★ 7.0 ⏱ 24 min

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.

Season 1

S1 • E10

EP 11 ★ 8.3 ⏱ 24 min

Uncool!

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

Season 1

S1 • E11

EP 12 ★ 8.3 ⏱ 24 min

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.

Season 1

S1 • E12

EP 13 ★ 8.0 ⏱ 24 min

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.

Season 1

S1 • E13

EP 14 ★ 8.0 ⏱ 24 min

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.

Season 1

S1 • E14

EP 15 ★ 8.5 ⏱ 24 min

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.

Season 1

S1 • E15

EP 16 ★ 8.0 ⏱ 24 min

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.

Season 1

S1 • E16

EP 17 ★ 7.5 ⏱ 24 min

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.

Season 1

S1 • E17

EP 18 ★ 7.5 ⏱ 24 min

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.

Season 1

S1 • E18

EP 19 ★ 8.0 ⏱ 24 min

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.

Season 1

S1 • E19

EP 20 ★ 7.5 ⏱ 24 min

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.

Season 1

S1 • E20

EP 21 ★ 6.0 ⏱ 24 min

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.

Season 1

S1 • E21

EP 22 ★ 7.5 ⏱ 24 min

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!

Season 1

S1 • E22

EP 23 ★ 7.0 ⏱ 24 min

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.

Season 1

S1 • E23

EP 24 ★ 7.0 ⏱ 24 min

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.

Season 1

S1 • E24

EP 25 ★ 6.0 ⏱ 24 min

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.

Season 1

S1 • E25