One rainy night, while the city’s holographic billboards flickered like distant constellations, Miyu’s laptop buzzed with an unexpected message: The screen displayed a soft, animated kitten with oversized, expressive eyes. Miyu laughed, thinking it was a glitch, but the kitten’s tail swayed in perfect sync with the rhythm of the rain. The First Test Miyu decided to run a simple test. She whispered, “I’m feeling a bit stressed about the upcoming demo.” Instantly, the kitten’s ears perked up, and a warm, low‑frequency hum filled the room—a sound engineered to lower cortisol levels. The kitten then projected a tiny holographic fish that swam across the desk, its scales shimmering in calming blues.