idk, all i saw was season 1 and mugen train (i think). i just remember thinking season 1 was beautifully animated and liking the storyline, but feeling a little empty towards the end, and also incredibly annoyed by zenitsu throughout the entire anime. i also dont remember a single thing about mugen train besides a little kid in the beginning, but im not sure if that was mugen train or if it was a snippet of season 2, lol.