Responses
It's when someone does a one chapter intro to a story, usually a web novel. There are no future manga/manhwa chapters after that. It's simply to get you interested in the story.
They happen a lot and you can get into since great stories that way, but sometimes those stories aren't accessible or translated yet. Then it's just upsetting.

It's one thing to do a promo chapter. It's another to do a promo for something where I've tried repeatedly to find new chapters that don't exist. Rude.