ShuruiKyri
Many years ago, there were five powerful Cookies, they were the Ancient Heroes, they protected where they stand, eventually they decided to start a kingdom called True Cookie Palace. In order for someone to watch over their place as a replacement to prevent evil to come, they hired 5 more powerful cookies; Cookie Stars, each was a representative, they protected all Cookies around and they would help back to them, one day, darkness rose and a powerful Cookie ambushed them at their weakest, before disappearing into nothing, they sent a letter to The Five (Ancient Heroes) to alert their condition, once noticed, they hailed a contest to see who is worthy to save them, a ordinary group of Cookies have won and was worthy in order of them to escape the hands of the dark Cookie who ambushed the Cookie Stars.
Notice: The beginning of the story (eg. prologue) or anything relating to the game's lore may change when I get to the ending of the game.
Also note: This story takes place after Cookie Run Kingdom a few months after and takes place in a diary for all of the main characters.