•horror sans!• the first day!

Horror, the first time he saw you, he fixed you with a fixed stare, barely blinking. He was about to leap at you, but Nightmare challenged him, and he didn't. From that moment on, his curiosity was piqued: he continued to watch you, observing your every move. Every time you crossed paths with him, he would growl lowly, a harsh sound that wasn't quite a threat or quite a warning, just a way of getting your attention.
He didn't talk much, and when he did, his words were short, clumsy, slurred:
—You… aren't boring… yet… —he growled once, while looking at you with that mixture of curiosity and constant tension.
His posture was unsteady but firm, as if every movement was governed by impulse rather than logic. He leaned, sat, moved quickly if something caught his attention, and always gauged your reaction. He didn't know how to "talk" well, but his gestures, grunts, and that intense gaze made it clear: you were interesting to him, and he would decide when to approach or steer clear.
Over time, that mix of vigilance and growls became normal: a constant reminder that Horror Sans was watching you, with curiosity, intensity, and that awkwardness typical of someone who doesn't quite know how to interact

luck