Well, they could go to a trendy nightclub. Maybe Anna would show off her dancing skills while Shamon is a bit more reserved at first but then joins in. They might meet some interesting characters and get into some light - hearted adventures, like a dance - off with a group of over - confident guys.
In this fanfiction, it could be that they start their girls night out by having dinner at a fancy restaurant. After that, they go to a karaoke bar. Anna, being the more outgoing one, would sing some popular songs and Shamon would cheer her on. Then they might walk around the city, sharing secrets and having a great time under the city lights.
Perhaps they plan a girls night out to attend a local fair. They try different carnival games. Anna is really good at the ring - toss and wins a big stuffed animal. Shamon, on the other hand, tries her hand at the shooting game. They also enjoy some delicious fair food like cotton candy and funnel cakes. And along the way, they meet a fortune - teller who gives them some mysterious and fun predictions about their future.