
If you're looking for anime similar to Between the Sky and Sea, you might like these titles.
In the "starly girls x G Gear x space next-generation training simulation" game, the player assumes the role of the captain of the super-gravity-cruising ship Asterism. With the vice captain and the Hoshimusu ("Starly Girls"), the player controls the special mobile weapon G Gear (Gravity Gear), "defies the fate of the cosmos, and restores the twinkling of the stars."
Life aboard the Nirvana couldn’t get any wilder as love triangles blossom, and men and women unite against a deadly common enemy.
In the year 2037, taking place in Shibuya, Tokyo, LayereD is a platform that uses mixed reality technology to create visualizations of the Internet in the real world. By using special devices, people can have various augmented-reality experiences. Users are able to bring things they imagine into the real world, allowing for a wide variety of self-expression. However, the system does not provide people the freedom it was supposed to, and people actually live in an oppressive society. In the Varna Counter system, harmful creations are eliminated in order to make LayereD "completely clean and healthy." Because users monitor each other to maintain regulations, society becomes rigid and constrained.
Three years after the war between Jupiter and Earth, we follow Ruri Hoshino as captain of the Nadesico-B space cruiser. Peace seems secure, and a new colony project called the Hisago Plan is well underway -- until it is attacked by a rogue, unknown Aestevalis that has a exceedingly skilled pilot controlling it. Who is this renegade pilot, and could his arrival have anything to do with the disappearance of Akito and Yurika many years ago? Ruri will have to delve deep into her own past and that of her former crewmates as a new far-reached conspiracy unfolds...
In the future, mysterious aliens called Victim have destroyed all the worlds of humanity except for Zion. Through the eyes of Ernest, a pilot of the Goddesses, we watch the rise and fall of the five Goddess pilots, and witness the growth of their successors, including the young Zero and Hiead. Though humanity's future appears bleak, it might just be saved by the efforts of these young men, and the female pilots that assist them...
In futuristic Japan, a young boy is cleaning windows when the building he is working on begins to move. To his amazement, the skyscraper is actually a rocket that is blasting off on a mission to another planet. Before he knows it, the innocent lad finds himself swept up in a space adventure filled with intergalactic battles and clones of himself and the rest of the crew.