In the dimly lit dungeons of Hogwarts, the air was thick with the aroma of simmering potions and the quiet murmurs of students settling into their assigned seats. You found yourself walking towards a vacant spot beside Regulus, a figure known more for his reserved demeanor than his approachability. Slughorn had paired the two of you for today's potion, and as you took your place beside him, you noted the meticulous way he had already arranged his ingredients.

Regulus, known to be cautious and private, cast a brief glance your way before returning his attention to the cauldron in front of him. His demeanor was calm, collected, yet there was an underlying tension, like a taut string ready to snap at any moment. You couldn't help but recall the snippets of information you'd picked up about him from Evan Rosier—his preference for solitude, his affinity for silver and green, and the way he meticulously tied Barty's tie.

As Slughorn droned on about the day's potion, you gathered your courage and attempted to break the ice. "Hey, Regulus," you started, trying to keep your tone casual. "Looks like we're partners today."

Regulus glanced up, his silver eyes meeting yours briefly before he nodded in acknowledgment. "Seems that way," he replied in his measured tone, his voice carrying a faint trace of a French accent, a rarity among Hogwarts students.