In a barren frontier where people trade goods with each other in order to help each other survive. The Kotobuki Squadron are bodyguards for hire, led by a strict but beautiful squadron leader, an unreliable commanding officer, and a true artisan of a crew chief. Alongside pilots who don't lack for personality, they take to the air in dogfights, letting the engine noise of their Hayabusa fighters ring out in the skies. (Source: ANN)

2035 A.D. The heads of ancient giant idols were excavated all over the world. Using those twelve stones statues, Humanity had barely overcome the threat of extinction called the "Equatorial Winter". But the stone statues had forced Humanity to construct colossal suits of armor as their bodies and demanded that the humans fight each other. (Source: ANN)

For citizens of the Ken Empire, justice is a myth. Lord Keiro, the deranged Shogun of the Imperial Army, blazes a trail of terror across the countryside in search of the sacred sword that will make him a god. Standing in his way is Taito, an omnipotent star reborn in human form—a young hero who vows to use his celestial strength to avenge those slaughtered by the villainous Shogun. Taito's mystical powers steer him toward a violent showdown with Keiro, and if used recklessly, his newfound abilities could shred the very fabric of his being. To master the art of control and become a heroic martial artist, Taito must seek the guidance of others like him: the seven star-born warriors with the strength to shatter a corrupt empire.

Hitotose Chitose is now living together with his 5 teachers as his mothers when a mysterious girl appears and becomes their neighbor which turns out that that person is Nagatsuki Kuron who wants Mu-chan to be her mother so another sibling rivalry ensues as to who would end up as Mu-chan's child.