Two Bullets of Destiny: Silver & Grey

What if the effects of the APTX weren't fully understood yet? The effects of it would be enormous, Conan and Ai are sure of that. One mistake begins the story and suddenly several lives are at risk. More and more traces bring them closer to the final confrontation with the Black Organization. But they are not alone either. (CoXAi) (English Translation and Original [German] by Me)