Sinenis. La favola del gatto nero

This is a story about a seven-year-old boy named Arthur who, after freeing a captured butterfly, indirectly saves a black cat named Nereo, which turns out to be a messenger from the magical kingdom of SineniS. The cat assigns Arthur a mission to pass three tests: perseverance, courage, and willpower, to prove he is the Chosen One destined to bring peace to his world.