late 90s anime where women escape through air duct

In the near future, Major is the first of her kind: a human saved from a terrible crash, then cyber-enhanced to be a perfect soldier devoted to stopping the world's most dangerous criminals.

The story takes place in the year 2034, two years after the events in Ghost in the Shell: S.A.C. 2nd GIG. Female cyborg Major Motoko Kusanagi has left Public Security Section 9, an elite counter-terrorist and anti-crime unit specializing in cyber-warfare, which has expanded to a team of 20 field operatives with Togusa acting as the field lead.

Encouraged by her managers, rising pop star Mima takes on a recurring role on a popular TV show, when suddenly her handlers and collaborators begin turning up murdered.

A girl named Ai gets a major record deal to sing a song written by a friend of hers who is deceased. However an obsessed stalker fan slowly starts becoming more like her and tearing her world apart.

Lain—driven by the abrupt suicide of a classmate—logs on to the Wired and promptly loses herself in a twisted mass of hallucinations, memories, and interconnected-psyches.

The year is 2071. Following a terrorist bombing, a deadly virus is released on the populace of Mars and the government has issued the largest bounty in history, for the capture of whoever is behind it. The bounty hunter crew of the spaceship Bebop; Spike, Faye, Jet and Ed, take the case with hopes of cashing in the bounty. However, the mystery surrounding the man responsible, Vincent, goes deeper than they ever imagined, and they aren't the only ones hunting him.

Long on style and perpetually short on cash, bounty hunters Spike, Jet and Faye trawl the solar system looking for jobs. But can they outrun Spike's past?

Ten years have passed since the end of Bakumatsu, an era of war that saw the uprising of citizens against the Tokugawa shogunate. The revolutionaries wanted to create a time of peace, and a thriving country free from oppression. The new age of Meiji has come, but peace has not yet been achieved. Swords are banned but people are still murdered in the streets. Orphans of war veterans are left with nowhere to go, while the government seems content to just line their pockets with money.

Kenshin has settled into his new life with Kaoru and his other friends when he is approached with a request from the Meiji government. Makoto Shishio, a former assassin like Kenshin, was betrayed, set on fire and left for dead. He survived, and is now in Kyoto, plotting with his gathered warriors to overthrow the new government. Against Kaoru's wishes, Kenshin reluctantly agrees to go to Kyoto and help keep his country from falling back into civil war.

The mysterious flying creatures known as Zai suddenly appear, and in order to fight the creatures, mankind creates fighter aircraft called "Daughters," as well as the automatic fighting mechanism "Anima," which are shaped like human girls. The story centers on a young man named Narutani Kei, who yearns to fly in the sky, and an Anima considered to be humanity's trump card, a girl name Guripen.