yes. we've only developed 3 days so far
You do not develop "days" but you should develop a game... This "chapter" and "days" scamfest is literally everywhere LOL... The game, if published as an RPG, should have unlimited amount of days so even if you wrote story for 3 days (which is considered VERY slow) then you should probably stop charging for updates and instead leave it out for free and open source so people can fix your stuff...