@Player2_MV Sorry for the late reply! I see... I apologize for saying that without knowing the details. I don't think the composition was directly borrowed from anywhere, but I referred to comic book covers and advertisement posters from the 50s to 70s.
@DoctorPKssb No, but there's so much unauthorized use that I don't think filing a lawsuit would be very effective. (There are so many works by other artists being used without permission that it's mind-boggling.) For now, I'll just do what I can...