Lelouch and Cao Cao are partners, with the goal to prove humanity's worth. But along the way, they will change from their shared experiences, meet obstacles that can only be overcome with their combined skills, and find romances that they never could have imagined.

After his death, Lelouch is transported to the world of C and found out something. Then he was transported to another world, to a world where Devil, Angel and Dragon exist. Now, The Demon Emperor become a true demon not only in name but in flesh.

Akeno finds Lelouch, who is thrust into the world of devils without any idea of who or what he is. Together, they will try and find the true reason for his appearance and explain the mysterious circumstances surrounding it. His search yields the answers he is looking for, along with love and much more than he could have ever imagined.