You might have seen a 1991 OVA called Rai: Galactic Civil War Chronicle . It only covers the first arc, changes the ending, and has dated animation.
“The thunder of the heavens does not choose where it strikes. It simply destroys the unjust.” – Rai Ginga Sengoku Gun Yuuden Rai
The story is set in a galaxy ruled by a corrupt Silver Dominion. As the empire crumbles, warlords vie for control. Our protagonist is , a charismatic, roguish, and absurdly skilled fighter who captains the Thunder Jet —a small, heavily modified battleship that punches way above its weight class. You might have seen a 1991 OVA called