After a mistake in the rating game that almost caused Rias to almost be married to Riser, Rias removes both Issei and Akeno's evil pieces and are left for dead. What means will the pair go through to survive?

You never knew what you were. You do know that you once had two people in your life who cared for you, until they were taken by a man called "Infinite" and his Eternity Corporation. You wake up years ago in a place called "Endless" and regain your memories of those you cared about. You return to the land where you found a family. You find that grave of the one you considered a mother and meet with the one you began to fall in love with. The two of you bond in the loss of your mother and vow to kill Infinite and his corporation. You will also uncover secrets of who you are and find your place in an uncertain world with a girl who you soon realize is more than a sister to you.