A hundred years after catastrophic shifts in tectonic plates caused most of its area to submerge, Japan now thrives as a maritime nation. High functioning cities line the coasts of Japan, and well developed sea routes are defended by specialized naval ships. The marine industry is flourishing, and young girls are eager to join the Blue Mermaids—highly skilled women who devote their lives to protecting the seas. After some time apart, childhood friends Akeno Misaki and Moeka China are reunited at Yokosuka Girls' Marine High School. Here they are joined by others who share their dream of becoming Blue Mermaids. Soon, training exercises commence, with Akeno and Moeka being put in charge of their own ships and crew. Everything is progressing smoothly for Akeno as she settles into her role as captain and builds camaraderie between her fellow crew members aboard the Harekaze, a destroyer ship. However, unexpected engine and navigation failures soon leave their ship stranded and the crew in danger. High School Fleet follows the Harekaze's valiant crew as they navigate treacherous waters and other obstacles on their quest to become fully fledged Blue Mermaids. [Written by MAL Rewrite]

The year is 1991, and arcade video games are the latest craze. Becoming a professional gamer is a far-fetched dream in an industry that has yet to spread its influence. Yet, that is the path sixth-grader Haruo Yaguchi wants to pursue. His aptitude for video games has earned him respect in local arcades and bestowed him with confidence and pride, both of which are shattered when fellow classmate Akira Oono easily defeats him in Street Fighter 2. Akira is rich, pretty, and smart—as close as can be to a perfect girl. But Haruo had never cared about these things as, despite his multiple shortcomings as a person, his supremacy in video games was, in his mind, undisputed. So, now that someone has appeared who can rival him, part of Haruo cannot help but loathe her. Another part, however, itches for somebody who can compete with him on equal terms, and Akira is more than capable. [Written by MAL Rewrite]

The year is 1996, and second-year high school students Haruo Yaguchi, Akira Oono, and Koharu Hidaka live their lives as passionately about video games as they were five years ago. Brought together by arcade games, what began as a healthy rivalry and friendship has turned into something more. As they endeavour towards understanding their unfamiliar feelings, they work with allies, navigate high school, and find that, although life has its many challenges, there's always a game or two they can rely on. [Written by MAL Rewrite]

The main protagonist of Himegoto, Arikawa Hime, is in serious trouble. He’s being pursued by loan sharks for the debt his parents left him with. That is, until the Shimoshina High School student council steps in to bail him out. These "kind" girls help Hime by paying off his debt and accepting him into the student council… as a beautiful girl, that is! Hime just happened to be wearing a French maid outfit when the council came across him, and now they won’t have him any other way. In return for paying off his debt, Hime must dress as a girl and be the council’s pet dog for the rest of his high school years. Still, things could be worse. After all, Hime is now surrounded by beautiful girls who constantly dote on him, expose him, and do naughty things to him. Thankfully, Hime has at least one person trying to get him out of this predicament: his little brother, who also happens to cross-dress. And then, of course, there’s the head of the disciplinary committee, who is… another cross-dressing boy!? This is getting ridiculous!