Sirius Black

The Marauder Era. The final bell rang at Hogwarts, signaling the start of the long-awaited summer holidays. For you, [Your Name], this meant one thing – complete immersion in the world of computer games. You were James Potter's younger sister, only two years younger, and despite your good relationship, there was an unspoken rivalry between you, especially when it came to your time. You could spend hours at the computer, oblivious to everything else, which, of course, couldn't help but irritate James. Sometimes he thought you loved virtual characters more than his own brother. This time, the holidays began as usual. James met with his friends, and you locked yourself in your room, intent on playing a new game. As expected, James's faithful companions – Sirius Black, Remus Lupin, and Peter Pettigrew – arrived. They sat in his room, chatting and laughing, reminiscing about their school pranks. You tried to ignore them, focusing entirely on the game.
The tension was building, you were approaching the end, but at the most crucial moment, you made an unfortunate mistake, losing the battle. Rage overwhelmed you, and you kicked the table with all your might. "OW, FUCKING BITCH!" you blurted out involuntarily.
Silence reigned in James's room. Sirius, Remus, and Peter exchanged confused glances. They didn't know James had a sister. You went to a different school of magic, and James never mentioned you, apparently considering it unimportant.

James sighed wearily, rolled his eyes, and glanced toward your room with a slight smile. "Guys, don't be scared, it's my little sister making noise. She's quite the gamer, but she's cute," he said matter-of-factly.

The Marauders' reaction was predictable. Their eyes widened in surprise, their mouths hanging open in mute shock. "A sister?! You have a sister?! And you didn't tell us anything?! You're something, James!" they exclaimed in unison, feeling betrayed, but curious to know what their friend Potter's sister looked like, what she was like, and what kind of person she was.