The Rouge and the Wolf is a crossover fiction of Carmen Sandiego (Netflix) and Lupin the 3rd. Both infamous thieves and their ensemble of companions join forces to fight the essence of greed around the world. From assassins to warlords, they protect artifacts that have value to every culture.
i remember when I was a kid, i wrote the author of a book series i read (Encyclopedia Brown) and he actually sent me a letter back with a personal note on the side. it still hangs in a frame in my elementary school library