Saki Miyanaga, along with the rest of Kiyosumi High School's mahjong team, proceeds to the national level of the Interhigh Mahjong Championship. However, reaching the top will prove difficult as she faces opponents on par with and, quite possibly, exceeding her skills. Even so, she refuses to back down, vowing to stop at nothing to fulfill her goal: to see her sister face-to-face once more. [Written by MAL Rewrite]

The adorable girls of Ousui Academy's student council love to spend time with their crush, Kouki Narumi. But what happens when he isn't around? For the student council, consisting of otaku president Kaoruko Rokuonji; headstrong Ashe Rufflette Sakuragi; quiet computer programmer Toa Narumi; and Toa's best friend, the impish Mihiro Miyase, it means they will have to keep themselves entertained. Wagamama High Spec offers a glimpse into the girls' lives as they get into amusing—and sometimes risqué—hijinks at their school and around town. [Written by MAL Rewrite]

In the year 2010 AD, Hyper Hurricanes born concurrently all over the world caused severe damage. Five billion people lost their lives, decreasing the world's population to 3 billion. Existing economies and military were wiped out. Countries were frozen under solid ice, plains sank beneath seas, the world was changed dramatically. Human civilization enters a chaotic era. Poverty flourished outside of these economic zones and slums were widespread. The ruling class called themselves Logos and maintained their position by force of arms. They call the poor Revenus, who are exiled to live outside the special economic areas. Time has passed since then. Katsuragi Jo and Tsurasawa Jin, escape from Phantom, a force organized to watch Revenus and to suppress renegade elements of the Logos, taking with them a mysterious girl, Nobuto Sana. There are many who are interested in her, all with their own reasons.

Driven by an unwavering passion for becoming an idol, Yu Azuma, a young, ambitious first-year student at Joshu East High School, embarks on a journey to form an idol group. To make her dream a reality, she recruits one girl from each of her region’s four high schools, located to the north, east, south and west, and soon finds her fellow group members. Joining Yu is Ranko Kashima, a sophisticated second-year student at Holy Teneritas Southern Girls’ Academy, with a distinctive curly hairstyle and admiration for Madame Butterfly; Kurumi Taiga, a student at West Tech Vocational High School, who wears cute, oversized jackets with long sleeves and dreams of winning the championship at a robotics competition; and, Mika Kamei, a student who also hails from Joshu North High School, known for being a kind-hearted girl and for her dedication to volunteering. With the help of Shinji Kudo, Yu's "collaborator" and confidante, these four young girls set off on the road to stardom. But the journey hides unexpected trials, rigorous demands, setbacks and pressures, threatening to undo all that Yu has worked so hard for.