Library

A young man accidentally came to a parallel magical world to see how he grew into a great lord...

He was buried by a sudden avalanche while climbing; he was accidentally discovered N years later and sent to the most hidden laboratory of the empire, where he was inadvertently implanted with the top brain of an unknown civilization; the intrigue between people, the war between large interstellar countries; the battle between interstellar battleships, the battle between the most passionate mechas, began...