Mirror World Line

Two parallel worlds that were once identical, and two life trajectories that should have been exactly the same, have undergone earth-shaking changes because of a seemingly unsuspicious choice. This is the story of two parallel universes with intertwined destinies. Mechas and superpowers coexist, secret forces rise secretly, and everyone is just an ordinary butterfly on the torrent of undercurrents. "Regret? Pain? Guilt? "Give you another chance, "Would you make the same decision again?"