Story follows high school student Saki Miyanaga and her classmates as they become absorbed in the game of mahjong. They target an upcoming national competition.

Saki

A new one, Hikari, pointing to the top of the idol, was communicating with the fans through a live. One day, she meets the idols Nikusako and Ai, who were participating as dancers in the photo essay of the new song. The filming was fine until the arrival of a new girl named Chi, causing problems.

Shoujo Picaresque

One summer day in her second year of high school, Aki sees her school's boys' baseball team playing in the Koshien (the National High School Baseball Championship), and unable to stand still, she sets her mind to start her own club. One day, Samejima, who used to play for the Japan University of Physical Education's women's softball team, comes to the school as a physical education teacher, and Aki goes to ask her to become the coach of the baseball team...