The Correct Way to Use Dragons, Cats and Time Travelers

After the mercenary Richard was reborn, he just changed his body, but the former Dragon God Bahamut turned into a cat? It was the year 1564 of the Third Era, a time of turmoil and turmoil. How can a man and a cat who started from humble beginnings survive in Carnasius, a place surrounded by powerful enemies and numerous heroes? Although the body is like a sparrow, it still has the ambition of a swan.