"A world" - After graduating from a university, close friends Takashi Tsurug and Tomohiko Miwa begin work at a company which does brain research. One day, Tomohiko introduces Mayuko Tsuno as his girlfriend. Takashi is stunned. When he was a university student, Takashi saw Mayuko Tsuno every day on the train opposite from the one he rode. He became attracted to her back then. "B world" - When Takashi Tsurug wakes up, his girlfriend Mayuko Tsuno makes breakfast as usual at his apartment. His friend Tomohiko Miwa introduced him to Mayuko and they have lived happily as a couple. Everything seems to be going smoothly, but Takashi begins to have doubts. Tomohiko, who worked with him at the same company, disappears and he can't discern if his memory is real or imaginary.

A group of people must find out how to stop the newborn deadly curse, which has born and gone viral after a Youtuber accidentally captured a vengeful ghost on camera.

A group of junior high school must find out the truth of their classmate's death is he was killed by someone or committed suicide.

In the early 1990s, experiments were carried out secretly in Japan. Two different methods were used in the experiments. One method involved forcing stress upon expecting parents and when the baby was born, provoke the baby into mutations and develop their special abilities. The other method involved birth to babies having abilities of animals and insects. The special abilities were derived from gene manipulation. Subaru, Saya and others were born from those experiments.

The third installment of the Chihayafuru trilogy.

A group of junior high school must find out the truth of their classmate's death is he was killed by someone or committed suicide.

Following the karuta tournament in Tokyo in the prequel, Chihaya's team is ready for national championship. However, Chihaya is disappointed to hear that a childhood best friend from whom she drifted apart has quit the game. She pours her time and energy into training for the nationals, but in the process sacrifices a lot within and without. Written by aghaemi

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 start a karuta club at their high school.