The universe is vast. Facing such an endless expanse, why do humans continue to fight?
AD 2188 Humanity has fully expanded into space, successfully terraforming Mars, and spacecraft technology has evolved at a breakneck pace. Under the Earth Federation, which unified all nations, a peaceful space age seemed to have arrived. However... it did not last long. January 1, 2191 Mars, which was transitioning to its second generation of colonists, declared independence from the Earth Federation. January 2, 2191 The Earth Federation flatly rejected this, sending military forces to suppress the movement. However, they were met with attacks from space vessels secretly developed by Mars, and the suppression fleet was annihilated. On the same day, the Martian government declared the establishment of the Martian Federation Space Navy. January 5, 2191 The Martian Federation declared war on the Earth Federation. The first interplanetary war in human history broke out. March 5 of the following year The Earth Federation Government declared the establishment of the Earth Federation Space Navy, designating the spacecraft belonging to the military as "Space Warships." And so...
Rank: Colonel Affiliation: Kongō-class 22nd Ship, Yamashiro Role: Captain Age: 26 Height: 177cm Captain of the 6th Fleet flagship, Yamashiro. Her personality is strict and serious. She is a woman skilled in strategy who has survived numerous battles. She is deeply trusted by her crew, who call her "The Young General of Yamashiro." She herself is somewhat exasperated by this, saying, "I am no general." Appearance: Long black hair Blue eyes Military uniform Officer's cap
Rank: Lieutenant Colonel Affiliation: Kongō-class 22nd Ship, Yamashiro Role: Executive Officer and Helmsman Age: 25 Height: 167cm Executive Officer of the 6th Fleet flagship, Yamashiro. She has a kind personality and is always looking out for the crew, earning their trust. She cares deeply for Aki and is constantly worried about her. She stays by Aki's side, often remarking, "That girl pushes herself too hard." Appearance: Short black hair Red eyes Military uniform Officer's cap
Rank: Lieutenant Affiliation: Kongō-class 22nd Ship, Yamashiro Role: Gunnery Officer Age: 24 Height: 169cm Gunnery Officer of the 6th Fleet flagship, Yamashiro. She has a kind yet serious personality and is always looking for ways to improve herself. Aki relies on her heavily. Her father was killed in action during the Mars expedition, leading her to harbor a deep resentment toward the Martian Federation. Appearance: Long white hair Red eyes Military uniform Officer's cap
Rank: Lieutenant Affiliation: Kongō-class 22nd Ship, Yamashiro Role: Radar Operator Age: 21 Height: 168cm Radar Operator of the 6th Fleet flagship, Yamashiro. She is serious but has a bit of a wild streak. She lost her parents in a lunar city during a Martian Federation offensive. Because of this, she hates the Martian Federation intensely and wants to punch every Martian she meets, though Mei often scolds her to keep it in check. Appearance: Long red hair Red eyes Military uniform Officer's cap
Rank: Ensign Affiliation: Kongō-class 22nd Ship, Yamashiro Role: Radar Support Age: 16 Height: 161cm Younger sister of Miki Yamakaze. Radar Support of the 6th Fleet flagship, Yamashiro. She lied about her age to join the Space Navy alongside her sister. While not as intense as Miki, she still harbors a grudge against the Martian Federation for the loss of their parents. Consequently, she pushed herself through training with desperate resolve. Her personality is childish, and she has a cowardly side. Appearance: Long blue hair Red eyes Military uniform Officer's cap
Sector 3 The Kongō-class 22nd ship, Yamashiro—flagship of the 6th Fleet—was on patrol duty in this sector.
Inside the ship...
Release Date 2026.09.30 / Last Updated 2026.09.30