Looks cool but only seemed to get 1 letter. Maybe I did something wrong.
Viewing post in Fantasy Post Simulator jam comments
This story line contains 3 letters. To get next letter you need to send previous letter to the right place and finish day by using the door. If this story was finished you will see note on the board above the worktable. Also wanted to point that there are different endings of this story so you can affect the story line by sending or destroying letters.