Thank you very much for your honest and thoughtful reply.
I’m sorry that I did not fully consider your feelings as the creator of Joanna when I asked about this use case. Even if the license may technically allow it, I don’t want to use your asset or character in a way that would make you uncomfortable.
So I will not use Joanna or your asset in an adult/R18 project, and I will not portray or associate the character with adult content.
I truly appreciate your kindness and the respectful way you explained your position. Your pixel art is wonderful, and I would still be happy to support or use your work in a non-adult project in the future.
Thank you again for your understanding.