This episode takes place before the actual planning of the School Fair and shows how the girls spend their summer holidays.

Manabi Straight! follows the lives of a group of young high school girls living in the year 2035 while they attend the all-girl Seioh Private High School. Since the birth rate has dropped dramatically, schools are being closed down due to the sheer lack of students available to teach. Morale in schools has dropped dramatically, and Seioh is no exception. The story begins when the main character, Manami Amamiya, transfers to Seioh. After some initial hijinks involving a futuristic scooter and a swim meet, followed by an inspirational school song performance, she is inducted as the student council president. The story that follows pertains to Manami working with Mika Inamori, the only other student council member, and three other classmates named Mutsuki Uehara, Mei Etoh, and Momoha Odori, in student council matters. After some remodeling of the student council room, Manami and her friends set forth to plan for the upcoming student festival. (Source: Wikipedia, edited)

In the previous century, an unprecedented disaster known as the Invertia drastically reformed the world. The powers of existing nations declined significantly, paving the way for a conglomerate called the Integrated Empire Foundation to assume control. But more importantly, the Invertia led to the emergence of a new species of humans who are born with phenomenal physical capabilities—the Genestella. Its elite are hand-picked across the globe to attend the top six schools, and they duel amongst themselves in entertainment battles called Festas. Ayato Amagiri is a scholarship transfer student at the prestigious Seidoukan Academy, which has recently been suffering from declining performances. Through a series of events, he accidentally sees the popular Witch of Resplendent Flames, Julis-Alexia von Riessfeld, half-dressed! Enraged, Julis challenges him to a duel for intruding on her privacy. After said duel is voided by the student council president, Ayato reveals that he has no interest in Festas. Instead, he has enrolled in the academy to investigate the whereabouts of his missing elder sister. But when a more devious plot unravels, Ayato sets out to achieve victory, while being surrounded by some of the most talented Genestella on the planet.

Keita Amano is a typical high school gamer living out an average student's life. One day, however, he has an unexpected meeting with the cutest girl in school that makes him want to disappear without a trace! This girl, Karen Tendou, is an exemplary student who is proclaimed to be the school's idol. She discovers that Amano is a gamer, and this newfound knowledge incites a passionate desire within her to recruit him into the game club. Upon visiting the club, Amano is forcefully made aware of a side to gaming wildly different than the one he loves so dearly. Tendou's interest in Amano begins shaking up what was once an uneventful life, filling it with spontaneity, awkwardness, and a little bit of mayhem. As a result, every day becomes a comical battle for Amano's sanity as he tries to adapt to these wild, unexpected changes.