I'm assuming you're referring to the character Kon from the manga and anime series "Kemonozume" (also known as "Witch Girl Kon").
If you are an artist inspired by this keyword, here is a checklist to nail the "Witch Girl Koooon Soft" aesthetic: witch girl koooon soft
If you could provide more details or clarify the context of "witch girl koooon soft," I'd be more than happy to try and assist you further! I'm assuming you're referring to the character Kon
Fan Art or Fiction: It's also possible that "witch girl koooon soft" refers to a piece of fan art, a character interpretation, or a story snippet where a witch character is depicted as having a soft or gentle demeanor. a character interpretation