The_N0vel
In all of his years at Hogwarts, Harry Potter has never heard of any Ball called "Hallow's Ball". Apparently, now his 6th year of Hogwarts, they are supposed to hold such an event around Halloween time! Though, this is not like any other Ball Harry has gone to before (Yule Ball). It's more or less a Masquerade Ball to hide others identity's and make new friends along the way.
Harry didn't know how to react with such news but went with it anyways. Hermione, on the other hand, loved the idea so much that she offered to pick out his costume and mask herself. Trusting her with getting his outfit, he accepts gratefully and sits back- waiting for her to bring back an amazing outfit that he could wear.
Though, what if all she comes back with is a dark gray, beautifully golden tinted dress and an also dark gray/golden mask?
"Hermione, who are those exactly for?"
"You, silly!"
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Republished on Fanficiton.Net under the title "Hallows' Ball (Drarry)". If you still can't find it then search up my username "The N0vel". (Without quotations, of course!)
Edit: It is now also republished on AO3 or ArchiveOfOurOwn. It's under the name "Hallows' Ball" and if you still can't find it then search my username "TheN0vel". (Without quotations, again.)