I Transmigrated into Honkai, and My Golden Finger Is a Five-Dimensional Songstress

Out of nowhere, I appeared high in the sky and plummeted down. When I came to, I discovered that I had been altered, and that people were fighting on the rooftop... Hold on, a girl with white twin braids and a purple-haired girl in a sailor uniform? This is high-level gameplay... I transmigrated into Honkai, but that's fine. I have a golden finger! It's just a little unexpected... "I really didn't expect that, after transmigrating, I'd be lucky enough to hear your songs." X said, looking at the Metatron Cube in his hand. The Starshine Cube, the Azure Icosahedron, the Scorching Red Tetrahedron, the Sky-Blue Octahedron, the Golden Rock Hexahedron, and the mysterious Dodecahedron: the songstresses from the five-dimensional medium became his allies in clearing Honkai. Oh, and there was also a boy who watched the stars~ So what should he do after clearing the game? "Honkai is only the beginning." He boarded a shuttle and set off on a journey across the boundless cosmos. "I want more people to hear your voices." ...