One melody echoed across three universes. MIRA (Midnight) dances in endless night. RINA (Sunlight) sings in golden dusk. SENA (Fire) walks burning ruins. Strangers humming the same song. A faint resonance becomes gravity; the walls between worlds shatter. 3, 2, 1— in the flash of COLLIDE they meet, and countless lights become an audience. Not one in ten thousand — the future they chose. TRIVERSE = TRI x UNIVERSE. An all-AI virtual girl group's debut. Which universe will we meet in next?