Kid has his eyes set on the "Lady of the Sky" jewel aboard Bell 3, the largest airship in the world. However, a mysterious terrorist group called Red Shamu-neko has hijacked the airship, along with Conan and his allies Kogoro and Ran.
The story revolves around three classmates who play simple hand games. One of the girls is good at games, but hates them as she always lost to her older sister and forced to do chores while growing up. Another girl is of American descent, but raised in Japan, and who only pretends to be bad at Japanese. Another girl usually observes their games, and loses to the other girls.
An elementary school girl has created a mask to hide her true self at school but one night when she wishes to be able to express her true self three guardian eggs appear.
Horse girl Special Week has moved from the country to the city to attend Tracen Academy. There, she and her classmates compete to win the Twinkle Series and earn the title of "The County's #1 Horse Girl."
To save their kingdom from evil rodents, two young mice go on a quest to a forbidden world to find a legendary magic crystal that has the power to restore order to their kingdom.
One day, I-a high schooler-found a paperback in the hospital. The "Disease Coexistence Journal" was its title. It was a diary that my classmate, Sakura Yamauchi, had written in secret. Inside, it was written that due to her pancreatic disease, her days were numbered. And thus, I coincidentally went from Just-a-Classmate to a Secret-Knowing-Classmate. It was as if I were being drawn to her, who was my polar opposite. However, the world presented the girl that was already suffering from an illness with an equally cruel reality.