Yu-Gi-Oh! CARD GAME THE CHRONICLES is a monthly short-anime series showcasing Official Card Game-original card themes. It is an expansion of the demo reel of the same name released the previous year.

Uta Sakura is a lively and energetic middle school student who loves singing. One day, while walking her dog, she encounters a cute, peach-like fairy named Purirun, who is searching for the Legendary Protectors "Idol Precure." Purirun's hometown, KirakiLand, was a peaceful, sparkly place but has been forced into darkness by the villainous Darkine, leader of the Chokkiri Gang. Uta decides to help Purirun search for cheerful and happy people to become the Precure so KirakiLand can become bright again. Suddenly, the Chokkiri gang arrive in Hanamichi Town, Uta's hometown, and steal the sparkles from the townspeople. Uta decides to illuminate the darkness with sparkles from her song and is granted the power to transform into the Legendary Protector, Cure Idol.

Ten thousand years ago, the immortal king Muyun was conspired by others for holding the Zhu Xiantu. After ten thousand years of sleep, his remnant soul awakened on the famous "Trash Muyun" of the Southern Cloud Empire of the Heavenly Fate continent.

Tsukuyomi is a virtual realm where hopes and dreams come together. Iroha Sakayori, a 17-year-old high school student in Tokyo, leads an extremely busy life trying to balance part-time work and academics. She finds peace by watching a popular streamer named Yachiyo Runami, who is the administrator of an online virtual space called Tsukuyomi. Iroha frequents Tsukuyomi, where people can live different lives and freely pursue their creativity, and she passes the time by supporting Yachiyo and playing battle games to earn a little extra money. On her way home one day, Iroha finds a telephone pole shining with iridescent hues. To her surprise, an adorable baby emerges from the pole. Unable to abandon it, Iroha takes the infant home and watches her rapidly grow into a girl her own age. "Are you Princess Kaguya?" The grown-up Kaguya develops a self-indulgent personality. At Kaguya's fervent request, Iroha helps her start streaming in Tsukuyomi. With Iroha as producer and songwriter and Kaguya as streamer and singer, the two grow steadily closer. Little do they know that ominous forces lie in wait, eager to take Kaguya back to the moon. This is the tale of Princess Kaguya as never seen before.