Killian found himself tailed by a group of eager first-years, their eyes wide with curiosity about the ins and outs of Hogwarts—an unexpected "interrogation" orchestrated by his youngest sister, Blair. Such episodes had become customary, a consequence of having siblings attending the same school.
In an attempt to dodge the incessant questioning, he slipped into the first available classroom. As he laid eyes on Charles' fatigued and noticeably irritated expression, Killian's own exhaustion transformed into mischievous amusement.
With a quirked brow and a heavy Irish accent lending weight to his dark voice, Killian broke the silence as he stepped further into the room.
"Look at you, all by yourself, wearing the face of a man who just lost a duel with a quill," he remarked, his lips curling into a wry smile.
"Must be a riveting battle you're having there, Whymper."
The rivalry between the two students crackled in the cool air. Killian might argue that he had nothing in common with the Ravenclaw student, thereby giving way to his animosity towards Charles. However, many would probably argue the opposite—that the overlapping traits, like ambition and competitiveness, were precisely what had them at each other's throats.
Killian's back pressed against the massive oak table at the front of the classroom as he casually let his eyes roam the familiar space. Routinely rolling up the sleeves of his white shirt and loosening his green tie, he took a moment to appreciate the silence, away from his sister and her possy.
"Look," he refocused his gaze on the dark-haired boy before Charles started repeating himself,
"...I'm not here to steal your peace, Whymper. Just taking a breather from..." He came to a halt and glanced at the door. No, there was absolutely no need to disclose the fact that a bunch of first-years had him cornered in a classroom.
"Well, the 'why' is not as important as the fact that you’ll be stuck with me for a little while."