If you're looking for manga similar to Azur Lane: Ayanami, Kekkon Suru Desu (Light Novel), you might like these titles.
In the year 2030, "The Belian Island Incident" happened where a highly radioactive alien substance was accidentally exposed to the atmosphere, causing half the world's population to be killed or mutated into zombie-like creatures called ELID and the land becoming contaminated and uninhabitable. In response to the world suffering a shortage of Manpower, highly advanced androids with superior strength and advanced AI capable of expressing emotions called A-Dolls were created. When World War 3 broke out in 2045 to 2051 over uncontaminated land and resources, Private Military Companies used A-Dolls with the ability to fight called T-Dolls in the war, which made them rich, becoming the de facto police and military of many nations after the war ended. However, in 2061, T-Dolls of the world's largest PMC, Sangvis Ferri, suddenly rebelled, killed their human masters and attack nearby human settlements. In response, Grifon & Kryuger PMC and their T-Dolls were hired to stop and contain the Sangvis Ferri Forces.
Set in 2045, humanity struggles to survive in a world overrun by mysterious invaders called the Irousu. The Earth's only hope lies with the students of Shinjugamine Girls' Academy, a school where Star Guardians train to fight the Irousu. Together, these brave girls work to develop their skills to fight against the invaders… provided they can pass class first!