There are many questions left unanswered in Akame ga kill. The fact that there was a fight for the throne meant there wasn't a crown prince. Who is Tatsumi? Who are his parents? Why does Tatsumi have delicious blood? This is just a thought and a what if situation. Oneshot
Emiya Shirou was always different/twisted from the mass. This distortion with lead him to become a hero. But it doesn't end there. To save he will cross dimensions challenge a god and slay him in combat to become the 8th king. Watch Emiya Shirou's new life full of girls, power, and battle. Redoing of Godslaying hero/king. Rated T for now.
In her childhood Rias was in peril and was about to die when a miracle happened. Using a heirloom from the Gremory clan she somehow summoned Emiya Shirou into the world of DxD. Armed not only with the experience and knowledge from the previous world but an artifact of power Emiya Shirou becomes...a servant and at that a pawn. (No Issei)