
If you're looking for manga similar to Soukou Musume Senki, you might like these titles.
Two children, Kiriru and Ignato, are born to a life of fighting. Their mother hopes that they will not end up having to fight alone. As a teenager, Kiriru does not like his assigned destiny, but he must fight monsters or many other people will die. Will he accept his fate, and will he ever find a partner?
Akihabara is known as a shining beacon for otaku culture everywhere. But in a not-too-distant future, that culture is on the decline due to a mysterious affliction causing widespread memory loss. As a result, Akihabara has lost its luster. However, in one of the few remaining otaku shops, Izumi and a handful of comrades hatch a plan to restore lost memories and return “Akiba” to its former glory.
The year is 2017, in the city of Tokyo an idol group known as DOLLS is fighting against extraterrestrial monsters known as Pygmalion. Those who get attacked are deprived of their emotions and memories. If they're consumed, their very existence is wiped from the minds of everyone and the world itself. The girls who died and became "dolls" are the only ones capable of fighting against the Pygmalion threat. Another doll suddenly appeared before the girls during a battle, who in the world is she!?
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!
Fish suddenly disappeared on Earth. The Ministry of Fisheries has initiated the experimental program of creating ‘Aquatic Orbs’, farming fish in encapsulated bodies of water in space. Six girls are selected as candidates to become fishers who will go into space to catch new species of fish. From Onomichi City to the cosmos, this is the story of aspiring girls aiming to be Space Fishers!