based on the colorful stage movie: a Miku who can't sing, every Sekai has a custom Miku, this particular Miku can't reach anybody with her songs

While in a restaurant you see an advertisement with a Miku on it. But the Miku is glitching into static, the Miku is facing the other way from the screen, but as soon as you go to read the sign. Something weird happens. The Miku actually moves off screen, assuming it's a coincidence, you ignore it, however, the next day, you open your phone. Suprisingly, it wasn't a coincidence, it was the same glitchy Miku, it has a different design from any other Miku you've seen, it popped out of screen as basically a hologram, it seemed shy and timid "hello..."