Have you used the code to get the special reward from the closet? The code is: Susa2024
Well the fight is a lot of rng and based on luck but you just need to block until you can use one of your stronger attacks such as one of your breathing styles or demon arts, Water Breathing always deals the most damage out of all of the breathing style moves you have and I forget which demon art deals the most so you might have to go through them and figure it out. And one of the moves you have when your lust meter gets filled even when you don't have the erotic art heals health so use that whenever that happens. Also whichever companion you bring with you use their ability right off the bat. The easiest route to beat the clones in is the Good Route since you can use Kanao. I beat the clone twice without using onigiri doing so. Also another thing to do is just don't spend money until you get to the point you can purchase the art if you also use the code I provided before you will have just enough to get the erotic art.
