You Have A Sister, Lord Meliodas?

It starts a year after they've beaten the Ten Commandments. Zeldris was not killed, he escaped. He has not made any fuss so far, so they left him alone until he does. The curse on Elizabeth and Meliodas is still in motion.

The demon king has asked Meliodas to find his sister that has been let lose into the world. The sins find out who Meliodas' father is and Elizabeth is questioning her relationship with Meliodas. Will the Seven Deadly Sins find Meliodas' sister? How will they react to her? What secrets will the sins unfold about Meliodas' secretive past?

Constructive criticism only. Do not hate on my work please. If you find any grammar errors or plot loop holes or information that doesn't seem quite right, please notify me.

I do not own any of the characters except for Meliodas' sister. I own the plot and I may incorporate other productions (animes, books, movies, etc) into this story. I also don't own any pictures or art like that. Thank you.