If you're looking for anime similar to Strike Witches: The Sky that Connects Us, you might like these titles.
In the year 1988 Jinki model enthusiast Aoba Tsuzaki is kidnapped and brought to Venezuela, and soon discovers that not only are Jinkis real, but that she will also become a Jinki pilot. Fast forward to the year 1991, and a series of unexplained events known as the Lost Life Phenomenon has been wiping entire cities out of existence. Enter Akao Hiragi, a young girl who has lost her memory and also has a strange tie to the Jinkis. Combined, Aoba and Akao have a common enemy: the evil Kokushou, a man who is hell bent on destroying the world!
To save the galaxy from impending doom, Cacao and Parfait are sent on a mission through time and space to retrieve the Fourth Warrior, Lamunes. Unfortu- nately, Cacao and Parfait discover Lamunes at the helm of the marauding Giga Genos invasion fleet. World by world, Lamunes is determined to bring the entire galaxy under his tyrannical heel. With the helpof a plucky orphan, it’s up to Cacao and Parfait to stop Lamunes from taking over the world.
The story follows an awe-imposing giant named Garon who comes from space to Earth, threatening humanity with extinction. However, a girl believes that Garon is not evil, and reaches out to Pick, a boy contained inside Garon's body. Meanwhile, the military plans to a nuclear strike against Garon.
Ichika had a prophetic dream involving all of the girls once again fighting an unstoppable foe. While his date ends up being with all the girls!
20 years ago a mecha called Devadasy was discovered in Tibet, and the organization Spirits was created to study and repair it. In the present day, an alien invasion has begun and Spirits is now an organization that uses Devadasy to combat this threat. Two friends, Kei and Naoki, join Spirits to help save mankind and become Devadasy's pilots - but what secrets is Spirits hiding about the Devadasy, fellow pilot Amala, and most importantly, Kei himself?
Japan, ten years after World War II. Boy detective Shoutarou solves mysteries and fights crime with the help of Tetsujin 28, the 50-foot tall giant robot left for him by his late genius father. But one day he's shocked to learn that his father also adopted and raised another boy named Shoutarou, now a repatriated soldier. Just as surprising to our young hero is the fact that his “big brother” can also control Tetsujin, even better than he can. But with the emergence of this elder brother comes danger, as a mysterious assassin, Morning Moon, closes in on the boy for being unworthy of controlling the robot. Meanwhile, the capital faces destruction when multiple bombs are discovered, planted by the two Shoutarous' father himself!