An original story included with volume 10 of the Nakanohito Genome [Jikkyouchuu] manga.

Iride Akatsuki has unlocked hidden content in the game he's playing, 'Nakanohito Genome,' and it turns out that this content is a real-life game! He soon wakes up to find that he has been kidnapped and taken to a strange place, along with a number of other teammates. Each of them specializes in a certain sort of game, like cultivation games, fighting games, puzzle games, etc. A llama-headed 'teacher' gathers them after level 1 is cleared to explain how the game will proceed. Will this group of gamers succeed, and make it back to their real lives? (Source: MangaHelpers)

Beginning her academic journey as a first grader, Shiori comes face to face with the aspect of school she has heard alarming rumors about—homework! However, her worries quickly turn into excitement as the Asahigaoka girls agree to work together to complete their assignments at Komari and Natsumi Koshigaya's house. Their plan appears to be successful until an all-too-familiar feeling of procrastination creates a rowdy distraction for Natsumi. On another day, Natsumi asks her teacher Kazuho Miyauchi if she can form and lead a new badminton school club. While the lack of funding and equipment proves to be a major setback, it does not stop Natsumi and the other girls from asking the candy store owner Kaede Kagayama for some help. During their spontaneous badminton practice, a minor accident leads Kaede to reminisce about a memorable day when she babysat Renge Miyauchi.

With summer vacation coming to an end, the girls are having as much fun as they can with their remaining time. However, their daily shenanigans are cut short when Suguru Koshigaya wins the grand prize of a lottery—tickets to Okinawa! After hasty preparations, the Asahigaoka group embarks on a three-day trip for their final summer getaway. Upon arriving in Okinawa and checking into an inn, the group comes across Aoi Niizato—the young daughter of the inn's hostess. Despite being of similar age, her mature demeanor leaves Natsumi Koshigaya reflecting upon her own childish nature. With the sign of an unexpected friendship blooming on the horizon, the girls waste no time diving into their ambitious sightseeing plans and regional activities!