The Ember of Mars

Mars-descended Roman general Lucius is comatose eight years after battling the Chimera. He wakes to find his beloved Aurelia bore their son Marcus alone, enduring clan abuse and a forced political marriage. Lucius rescues them, beats Parthian spy Surena, and weds Aurelia publicly—revealing he has been reborn a hundred times through Mars and Diana to rewrite fate and save her.