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Series

Blue Box

202425m7.9 / 102 seasons

Taiki Inomata loves badminton, but he has a long way to go before he can reach nationals. When Taiki sees upperclassman Chinatsu Kano practicing her heart out on the girls’ basketball team, he falls for her hard. After an unexpected turn of events brings the two closer together, sports might not be the first thing on their minds anymore!

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Available in US

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Season guide

Season 1

25 episodes available

Episode 1: Chinatsu Senpai

24m

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.

Episode 2: You Have to Go to Nationals

24m

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

Episode 3: Chii

24m

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

Episode 4: If He Wins

24m

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.

On screen

Cast & Characters

Shoya Chiba

Taiki Inomata (voice)

Reina Ueda

Chinatsu Kano (voice)

Akari Kito

Hina Chono (voice)

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Episode 5: Aquarium

24m

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?

Episode 6: Wish Me Luck

24m

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.

Episode 7: Can I Have One?

24m

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

Episode 8: Score!

24m

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.

Episode 9: I'll Be Rooting for You

24m

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

Episode 10: It's Not a Good Thing

24m

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

Episode 11: Uncool!

24m

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

Episode 12: Girls...

24m

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.

Episode 13: I Want a Back-and-Forth Rally

24m

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

Episode 14: What's the Connection?

24m

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

Episode 15: August 26

24m

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

Episode 16: Unfair Woman

24m

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

Episode 17: Of Course I Want to See It

24m

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

Episode 18: I Know

24m

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

Episode 19: I've Got Plans

24m

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

Episode 20: As One of Her Closest Friends

24m

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.

Episode 21: A Chance to Blossom

24m

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

Episode 22: Inota!

24m

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

Episode 23: Spinning

24m

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.

Episode 24: A Roller Coaster

24m

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.

Episode 25: Even So

24m

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.