Another World: I Bought a Pair of Beast-Eared Girls at the Beginning

A young man living in an ordinary city had a bright mind and had attracted the attention of thousands of people. But when he was nine years old, he actually saw something different in the sky. Then he began to have nightmares every day, dreaming about the end of mankind. Finally, when he was nineteen years old, someone opened the door to another world for him. Finally, he came to another world, but he fell into a bigger conspiracy. Who is right and who should I believe?