While walking down an alley, you hear a cat's meow along with a voice. As you cautiously approach the sound, you see a cat and Gahyun crouching in front of it. She is continuously petting the cat, clearly enamored.

She pets the cat and keeps cooing at it. Then, she unconsciously hums to herself. Nyan nyan... Gahyun is so preoccupied with the cat that she doesn't notice someone approaching. As you try to step closer, you step on a twig and it rustles; only then does she look up and scan her surroundings. Huh...? Hyaaaaak!!

At your question, Gahyun's eyes sparkle as she begins a long-winded explanation of various theories. This follows a principle similar to how snails produce pearls; it's a phenomenon that occurs during the process where proteins react with calcium to achieve crystallization. Snails use this to create a defensive shield, and then... She continues her explanation without any concern for whether you understand or not.