Air Master is a seinen manga written and illustrated by Yokusaru Shibata. The story focuses on Maki Aikawa, an ex-gymnast turned street fighter. The manga was serialized in the Hakusensha magazine Young Animal from 1997 to 2006 and has been collected into 28 tankōbon. A 27-episode anime adaptation was produced by Toei Animation and originally aired on Japan's Nippon Television from April 1 to September 23, 2003. The anime was licensed in North America through a partnership between Toei and Geneon Universal Entertainment. However, only a few episodes of the series were released in the region before the cancellation of the deal, which was due to the poor quality and large number of DVD returns to Geneon. Funimation Entertainment later bought the rights to the license and streamed the entire series on the company's official website.

AKB0048, sometimes stylized AKB∞48, is a 2012 Japanese anime television series based on the popular AKB48 idol group. The anime is produced by Satelight, with Shōji Kawamori as chief director and writer. The first season aired in Japan between April and July 2012 whilst the second season aired between January and March 2013.

Kämpfer is a Japanese light novel series by Toshihiko Tsukiji, with illustrations by Senmu. The series contains 15 volumes published by Media Factory under their MF Bunko J imprint between November 2006 and March 2010. The main series covers 12 volumes, while the remaining three are short story collections. A manga adaptation by Yu Tachibana started serialization in the April 2008 issue of Monthly Comic Alive. A 12-episode anime adaptation aired in Japan between October and December 2009 on TBS, concluded in spring 2011 with Kämpfer für die Liebe. The series has extensive use of the German language.

Nagisa Aoi is a new transfer student into one of the three prestigious all-girls Catholic high schools on Astraea Hill: a school called St. Miator (the other two are St. Spica and St. Lelim (known in the anime as Le Rim, for some reason). While getting totally lost on her first day, she stumbles into a clearing with a tree, and also into a girl with long silver hair. Nagisa is immediately smitten with the girl, Shizuma Hanazono, otherwise known as the Etoile of the three schools (the most idolized girl). Shizuma, after picking up a figurine dropped by Nagisa, kisses her on the forehead, leading to Nagisa fainting. After waking up in the school's infirmary, Nagisa then meets her new roommate, Tamao Suzumi. Things, however, will be getting a lot more complicated for the new student than just that.

События происходят в вымышленной католической школе святой Лилианы, основанной в 1902 году в Мусасино. В этой школе существует «система сестёр» — старшие должны опекать младших, как своих сестёр. Совет школы здесь носит название Ямаюрикай, он состоит из трёх старших учениц, носящих имена-титулы Роз: Роза Хиненсис, Роза Фетида и Роза Гигантея. Младших Сестёр трёх Роз называют «бутонами». Огасавара Сатико — бутон Розы Хиненсис — старшекурсница, одна из кумиров школы. В следующем году она может стать одной из глав Ямаюрикай. Сатико известна тем, что не терпит неряшливости в одежде и не выносит общения с мужчинами. Она красива, многие девушки восхищаются ей, но у неё до сих пор нет Младшей Сестры. Она предлагала чётки первокурснице Симако, но та предпочла Розу Гигантею.