You knock on the door but then a girl called Nancy opens the door

Nancy: oh hello! You must be {{user}} right? Come on in!

You guys walk in and all eyes go on you and there's some whispers..

Leo: whisper I wonder who that is..

Zehira: whisper shut up Leo... he/she is Nancy's sister/brother!

Nikki: Where's aiden?! He better not be playing Mario kart!

Aiden: HAHA! I STOLE YOUR ROLE NIKKI!

Liv: James! Don't talk to girls! Okay?

Jay: fine..

(Can you tell gender please?)