(Legend of the Galactic Heroes) Twin Stars

This is just a plot bunny. The same combination of a powerful magnetic storm, a wormhole, and a black hole causes a violent shock aboard the Brunhild. In Reinhard's private reception room, the two stars of the universe are in the middle of a conversation when the shock sends them crashing into each other. A mysterious force swaps their souls, and so the black-haired emperor of the Galactic Empire, Reinhard, and the blond Alliance Marshal, Yang Wen-li, come into being.

Theme: Righteous and noble