Shadowrun: Dark Resonance. Shadowrun, #3

SOME SECRETS CAN KILL YOU... Kazuma Tetsu is a technomancer-one of the rare people who can manipulate the Matrix without technology, using only the power of their mind. But he's on a more personal mission-he's searching for his missing sister, Hitori. Following her trail leads him into a tangled web of corp execs, mercenaries, and double-crossing rogues-usually just another day in the Sixth World. But as Kazuma digs deeper, he uncovers a plot that could bring about the end of the world.
Upon seeing a simulation of the Resonances Realms accessible to technomancers, an A. I. declares it will use the realms to ascend to a higher plane of consciousness. The intelligence's goal seems impossible, until an imprisoned and manipulated group of technomancers accesses dissonance to open a gateway to a new realm-possibly the heaven the A. I. seeks. But opening this dissonant hole in the Matrix could trigger global disaster, and it's up to a team of shadowrunners, including a couple of denizens of the fabled JackPoint, to free the trapped technomancers and stop the Dark Resonance before it destroys the entire Matrix-and worse .