The Unkown Demon (MeliodasXReader)

(Y/n) is form a completely different world then the seven deadly sins and could care less about them. She only goes to remind the gaurdain of that world when there is a meeting. One day she was seen by Meliodas but as she states in her goodbye, he never sees her again. But she was burned into his mind and remains there for a whole five years.
But what happens when she has to stay in Meliodas's world due to a creation of a nightmare is released and ends up being found by Meliodas and the rest of the sins. What is to come of (Y/n) the graudain of nightmares?
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this is going to get VERY VERY DARK! Covers murder and attempted murder as well as child abuss. Please I repeat please read with this in mind or skip to this🐈🐈🐈 from here on out this will get dark in random but fitting times and will use: ⚠⚠⚠
Apart of the Universe series.
Books in order:
1.Temptation: what the heart desires
2.The unknown demon
3.