The art was horrible in the beginning, but trust me it gets better as the story continues. This manga is viewed very critically and it seems like a lot of people don't like it, but I actually do. I really liked the worldbuilding, Lucy as the main character and the relationship between Bandou and Mayu which was very flat in the anime. Overall it wasn't as horrible as many people say it is. Sure, a lot of characters are flat (Yuka was annoying af), but it still is a good manga because of the story and worldbuilding. At least that's how I think about it.