In the 21st century, an earthquake devastated Japan, destroying Tokyo and leaving its people homeless and lawless. In the present, the ruins of Tokyo are a haven for thugs and street gangs, the most powerful of which is the ruthless Koryukai gang. Takateru Suga is visiting Tokyo on a mission: to find his sister Kiyomi, but things heat up once he discovers she's been kidnapped by the Koryukai themselves! With the help of a transvestite, colonel-turned-monk and a lot of firepower, Takateru must help defeat the Koryukai and save the city, or lose everything he holds dear!

One day in the near future, the Japanese Self-Defense Force decides to transfer the command (and financing) of their air force to private companies and investors. Most reject the idea as a joke, but some show business-oriented companies catch up on the idea, spawning the birth of a new type of idol: the so-called "Idol Pilots", celebrity combat pilots. The five Toreishi sisters, Kanna, Yayoi, Satsuki, Uzuki, and Mina, are teenage idol singers who are collectively known as The Hummingbirds. They are also one of the ace fighter pilot squadrons in the Japanese military. When they aren't saving the world from major overseas threats, they are on stage in frilly dresses, pursuing their idol career. This is the story of how they came to be Japan's most successful idol group and their first line of defense.

Set years after the Irresponsible Captain Tylor OVA. Tylor is now a Viceadmiral and Captain of the battleship Omi. This time he gets with his fiancée and political officer Lt.Cmdr. Yuriko Star and his staff officer and adjutant Cmdr. Makoto Yamamoto in a timetravel adventure back into the past of Raalgon at the time of the reign of Guze XV. (Source: Wikipedia)