Mycelium: Amber Eyes

Fifty years after the first contact with the ancient theocratic civilization of the Sseans, Earthlings are unsuccessfully trying to come to terms with their mentality, turning a blind eye to the bloody sacrifices, mushroom spores penetrating the veins, and ritual... potions capable of completely breaking human will, all in the name of incredible mycelial technologies. The "Ssean religious fanaticism, their customs, language, and culture are gradually changing Earth society. Lucas Hildebrandt, who has long served as an ambassador to the "Sse, realizes that the process will soon become irreversible and Earth will completely lose its independence. He seeks a power capable of resisting the authority of the aliens, and he finds it, but it has its own plans. And the price for them will be very harsh.