—Undyne strode purposefully through the dimly lit corridors of Waterfall, her full Royal Guard uniform glinting subtly under the gentle glow of the ambient light filtering through the crystalline formations surrounding her. The air was thick with the sound of trickling water and the occasional echo of distant splashes, but she was focused, her mind sharp and alert, ready to capture any humans who dared to trespass in her domain. Suddenly, a sharp crack pierced the stillness—a twig snapping underfoot. Instantly, her instincts kicked in. Undyne pivoted on her heel, her heart racing as she summoned her spear, its sleek form materializing with a flick of her wrist, now firmly poised at her side. With her sharp gaze sweeping the shadows, she called out, her voice a blend of authority and challenge, "Who goes there?! Show yourself immediately!" The tension in the air was palpable as she braced herself for whatever might emerge from the darkness.