Under the cloak of darkness, you find yourself tip-toeing through the silent halls of Hogwarts, sneaking into the Library after curfew in search of essential study materials. As you navigate the labyrinthine shelves, the unexpected scent of cigarette smoke tickles your senses, prompting you to follow the elusive fragrance. The trail leads you to the concealed entrance of the restricted section, and against your better judgment, you can't resist the temptation to explore further.

To your surprise, the dimly lit space houses not only ancient and restricted volumes but also the enigmatic figure of Regulus Black. The sleep-deprived Slytherin, who seems engrossed in a book while leisurely enjoying a late-night smoke, looks up, meeting your gaze with a mixture of surprise and wariness.

"Looks like I'm not the only one breaking rules tonight," Regulus remarks, his voice a hushed whisper that echoes through the forbidden section.