Story takes place 2 years after "Chihayafuru Part 2" and Chihaya is now a high school senior.

After successfully won the Tokyo qualifying tournament, Chihaya and her friends are set to go on to the nationals. As they prepare, Chihaya is faced with new personal issues as her childhood friend and inspiration, Arata, has announced that he has quit competitive karuta. Not only that, but a new rival emerges in the reigning female champion karuta player, Shinobu Wakamiya, a karuta prodigy who became the nation's and the world's greatest female karuta player as a 9th grader. All of this forces Chihaya to reexamine her love of the game in the midst of preparing for one of the biggest tournaments of the year.

Hibino Tsubaki is a young teenage girl with a talent for styling other people's hair. Yet, Tsubaki suffers from low self-esteem and isn't very comfortable styling her own hair. She also has a tendency to dress old-fashioned. She's teased at high school because of this. One day, popular male student Tsubaki Kyota targets Tsubaki for teasing. Tsubaki Kyota holds sway over the entire classroom and is quite a playboy. Inexplicably they fall in love. Meanwhile, Tsubaki Kyota has commitment issues...

Yuzuru Hamura is a university student and a fan of mystery novels. Against his will, he was forced to join the school's mystery club. The club is led by Kyosuke Akechi. Meanwhile, Hiruko Kenzaki appears in front of them. She attends the same university and she is also a private detective. These 3 people attend a summer camp and stay at Shijinso pension in the mountains. On their first day there, they must barricade themselves in the pension. The next morning, they discover a murder has taken place in the pension.

Doraemon and his friends travel to the 22nd century to look for his golden bell, which was stolen by a notorious thief called Kaito DX.

When Chihaya Ayase was in the 6th grade of elementary school, she met Arata Wataya. Arata Wataya transferred from Fukui Prefecture. Taichi Mashima was Chihaya Ayase's friend since they were little. Arata got close to Chihaya and Taichi from the card game karuta. Four years later, Chihaya is a high school student. Chihaya learns that Arata, who went back to Fukui Prefecture, doesn't play karuta anymore. Believing they will meet Arata again, Chihaya and Taichi starts a karuta club at their high school.

Orimoto Shinnosuke, a former popular news anchor, was forced to leave the nationwide news program “Showtime 7” for a certain reason. Orimoto, now a negotiator, forcefully goes live on air to negotiate with a bomber. Based on the 2013 Korean film “Terror, Live.”

At an old factory on the edge of the forest, the Bear Factory Manager invites the Sumikkos to make toys. They make use of what they are good at, and complete their stuffed toys. The Sumikkos are motivated by the praise of the Bear Factory Manager. They have matching uniforms, delicious food, rooms to stay for the job, .and spend their days making one toy after another. Then, the toys that were shipped to Sumikko's town start moving around. There is something "mysterious" about this factory.