Sixth grade was when Ayase Chihaya met Wataya Arata, the transfer student from Fukui. The shy and quiet Arata was hiding a surprising talent. He knew how to play the competitive karuta version of Ogura's Hundred Poets. Chihaya is stunned by the intensity Arata displays when playing karuta.

Chihaya's proclamation leads to a showdown between Mashima Taichi and the transfer student Arata, who is being shunned by their class. The stubborn Taichi, who's upset by how close Chihaya and Arata have gotten, steals Arata's glasses in the middle of the tournament. Arata, good as he may be, is unable to take cards without his glasses. That is when Chihaya steps in to take his place.

Chihaya, Taichi, and Arata visit the local Shiranami Karuta Society and meet the chairman, Harada, and a member who's their age, Kinashi Hiro (Retro-kun). When Harada sees them playing against Retro-kun in a team Genpei match, he realizes Chihaya's talent and invites her to join. After Harada tells Chihaya that learning the poems is like making 100 new friends, she begins to realize her own dream.

Arata returns with his family to Fukui after his grandfather falls ill. The three of them believe that as long as they continue to play karuta, they will be reunited. Now in high school, Chihaya has entered a tournament to qualify for Class A so Taichi will help her start a karuta club. Once Taichi sees how Chihaya is enjoying herself, he finds himself being swayed—

Chihaya is helpless against the Queen, but she still manages to take a few cards. But this match has taken her one step closer to understanding what true strength is. Meanwhile, Taichi has advanced to the Class B final. The Mizusawa High School karuta club members have gathered to cheer him on. Taichi has shown that he is willing to move forward, but can he achieve victory?

Chihaya finally gets to play her first Class A match, while the other members are looking to advance their rank through a strong tournament showing. Chihaya's opponent Kanai Sakura, who has 35 years of karuta experience. Chihaya is faster, but she has trouble taking cards. Her opponent constantly moves cards into positions that are difficult for her, and Chihaya soon realizes how tough Class A is. Will Chihaya be able to learn something from her match with Sakura?

The finals have begun. The Class D final is between Kana-chan and Desktomu-kun. The Class B final is between Taichi and Porky. Both finals pit Mizusawa players against each other. Chihaya watches and learns as teammates and rivals battle it out.

The Mizusawa High School karuta club is gaining experience by participating in tournaments. However, Chihaya's grades are so bad that she is no longer allowed to participate, leaving Taichi to attend the next tournament by himself. There, he runs into Arata, who's returned to karuta. When Taichi and Chihaya see Arata playing karuta...

The Mizusawa karuta club is watching the Queen match and Master match at Taichi's home. The Queen has put on a great deal of weight, which makes it difficult for her to move as Yumi successfully takes cards away from her. Will the Queen be dethroned?

A new school year has started and the Karuta club must get new members or face penalties. Discussing the goals of the club, Chihaya discovers the team is not as unified as she thought.

It is time for the High School Karuta Championship; the first years are amazed by the skill level of their upperclassman. Wataya continues his goal to the National High School Championships.

Mizusawa High School's karuta club claimed victory in the team competition for the first time at the Nationals in July. However, before they could even take time to relax, Chihaya and Taichi agreed to take part in the Fujisaki High School karuta club's training camp. Awaiting them was Coach Sakurazawa's brutal training regime of stretching, jogging, and playing seven matches each day!

The audience at the Yoshino Tournament is taken for a wild ride with so many unexpected twists: Arata, the focus of high expectations, has been defeated, and Taichi, who only just reached Class A, advances to the finals. And now it's time at last for the final round between Chihaya and Taichi, teammates who have been practicing together since they were in elementary school. The odds are in Chihaya's favor, but Taichi isn't playing his usual karuta since he declared that he would defeat her in an official match.

Chihaya chooses to go on her class trip in hopes to come closer to fulfilling her dream of being a teacher, but she spends the entire time lost in space, wondering how Taichi is doing at the Master tournament qualifiers. Harada and Inokuma are also participating in the East Japan qualifiers, but as Taichi tries to quietly psych himself up, someone unexpected shows up to get in his way. Meanwhile, at the West Japan qualifiers, Master Suo makes a surprising comment to Arata.

Arata plays his match even as Master Suo's words weigh on his mind, and Taichi battles a powerful opponent while ruminating over Dr. Harada's teachings. Meanwhile, Chihaya is so busy thinking about Taichi and Arata's matches that she's forgotten why she came on her class trip. Even looking at Hundred Poets exhibits doesn't bring her back to reality. So her classmate Michiru takes matters into her own hands...

Arata wonders why he feels so relieved to learn that Taichi lost his match, even as dark memories of a similar feeling at the Yoshino Tournament come back to him, leaving him unable to concentrate fully on his match in the finals. His opponent, Murao, realizes that Arata isn't himself and sees an opportunity, but then...

Arata's playing becomes reminiscent of Eternal Master Wataya Hajime's, allowing him to take control of the match's pace. Harada recalls the one match he played against Hajime when he was young and becomes painfully aware of how much his game sense has faded since then. But he sticks with the offensive play style that he teaches in the Shiranami Society, turning the match around in a way that leaves everyone in the hall holding their breath.

"You can't be Queen." Chihaya didn't lose heart even after being soundly defeated in her practice match with the Master, but she can't help feeling stunned by his comment. And Taichi, after seeing the Master's play style up close, begins to think about the style of karuta he wants to play. Christmas is also around the corner, and the Mizusawa Karuta Club has a plan in mind...

Both the Master and Queen matches come down to luck of the draw in an intense first round, ending in wins for Shinobu and Harada. Shinobu is shaken after learning that her grandmother, a politician, sees her as no more than a walking advertisement, as well as the fact that Chihaya chose her class trip over a chance to play in the Queen match, and she begins to break down in the second round.

Harada leads Suo with two wins and one loss as the Master match enters its fourth round. Harada has studied everything about Suo, including the weakness that Chihaya told him about, and he dominates the match with his trademark offensive karuta. Suo remains calm despite Harada's strong momentum, recalling what his aunt, who raised him, said to him when he was a child. Her words are the reason Suo continues to play karuta.

Suo and Shinobu win the Master and Queen matches, both defending their titles. Afterward, Taichi declines to return to Tokyo, staying behind alone for the Takamatsu Memorial Cup... and ends up playing against Arata. Meanwhile, Chihaya is shocked by Taichi getting the jump on her a second time, and she begins to wonder why he always makes his decisions without saying anything to her.

Taichi has told Chihaya about the feelings he had kept secret for so long. Now he's left the karuta club, and Chihaya's regret over failing to notice how he felt leaves her unable to play. But some new members have joined Mizusawa's karuta club, and among them is Tamaru Midori, a Class A player. She is a promising new member, but also a troublemaker.