Blaze?

Nyx strolled down the long corridor, the flickering lights above her making it appear gloomier with its grey concrete walls and floors. At the other end was another set of double doors with two bulky men guarding them.

"Haha! So, you are the one who has made all this racket?" The man on the left exclaimed with a wide grin. Nyx shrugged, stopping just before them and tilted her head to the side, wondering why they were blocking her exit. 

"Here, you will need this to gain entry to the floor above," The other guard handed her a golden card with a white crescent moon on it. Nyx turned it around and scrutinised it; it was so simple. 

"Is this all I need?" She asked, looking back at the guard who gave it to her. 

"Yes, make sure to keep it if you plan on returning to the Hub in the future," He replied, and the pair stepped aside.