To all readers: Sorry, but I rather to reveal any next character epilogue before their release. But instead, I've arranged a certain pattern regarding the characters' affiliations as a clue to who would be next. Hope you all understand and enjoy the surprise.
Disclaimer: I do not own Akame ga Kill! or Mortal Kombat. Those belong to their respective owners.
Epilogue: Akame
With Shinnok's return and his army on the rise, Raiden was left with no choice, but to plead to the current Emperor of Outworld, Kotal Kahn for putting up a united resistance. The Kahn had initially refused, but soon relented, after hearing the appeal of Earthrealm's new ally, Najenda of Night Raid. The Commander of assassins proposed of a plan to rid the realms of Shinnok, with little loss life.
A strategy was formulated. The forces of Outworld and Earthrealm will draw out the Netherrealm legions into an open confrontation. Then, while the Fallen Elder God's minions are distracted, a lone member of Night Raid will infiltrate the Sky Temple, and eliminate Shinnok. The one assassin selected for the task, was Akame.
No time was wasted, as the armies of two realms lay siege to a third. Akame took advantage of the chaotic battle, and bypassed Quan Chi's revenant guards.
Upon entering the Jinsei chamber, the Night Raid assassin looked on to see her mark begin corrupting the Jinsei. In the blink of an eye, Akame drew Murasame, and slashed at the Fallen Elder God's back. But to no avail, as Murasame's poison blade failed to end the Immortal's life.
After absorbing Earthrealm's power, Corrupted Shinnok turned his attention towards destroying his would be assassin. Left with no choice, Akame resorted to activating Murasame's Trump Card.
With the enhanced strength of Ennoodzuno, the young assassin fought on equal footing with Shinnok's corrupted form, matching his power with her increased speed and dexterity. The tide of kombat started to tilt in Akame's favor, as the Corrupted Elder God lost a limb for every blow he failed to land.
With no more extremities to support himself, Shinnok laid helplessly, as Akame hastily plucked the amulet from his torso. The resulting flux of power completely vaporized the Fallen Elder God, and bathed his assassin with the Jinsei's pure energies.
Now alleviated of the curse brought on by Murasame's Trump Card, Akame secured Shinnok's amulet, and left the Jinsei chamber.
Arriving at the Sky Temple, the red eyed assassin reunited with her allies as they rejoiced at her great victory.
In recognition of her deeds, Raiden and Sonya Blade invited Akame and all of Night Raid to come to Earthrealm, to attend a ceremony of commendation for their help in defeating Shinnok.
Much to the Eathrealmers' shock, Akame and Night Raid respectfully declined on grounds of having committed to a prior engagement, in Outworld. After all, how can Akame refuse a banquet in her honor arranged by Kotal Kahn's Imperial Court.
After much celebration, and the fostered peace between the three realm's, Akame withdrew from fighting, and dedicated the rest her life to traversing the realms and visiting different worlds. By using Outworld magic and Special Forces technology, she traveled the multiverse, and met with many strange and unique civilizations.
But one particular world had caught her notice. It was a realm of a modern era, but rife with crime and corruption. Not wanting to leave this world in a state reminiscent of the Empire she fought to bring down, Akame resolved to stay and fight the growing evils that threaten to ravage this world. Starting with the one city where the darkness was most concentrated, Gotham City.