Responses
the promos are usually a teaser for the light novels, and if the light novels get big enough. Often times the novels will get adapted into a manhwa. I'm my female lead lists I've had to change 'promo' because they now have an adaptation. So i add them to keep track as well and to let others know that the story already exist but usually in ln form.
Why would you put a promo manhwa
But it's okay! Thanks for the list!