movie.
The device that characters can communicate by mails.
Lake house's mail box can move mail box's component that is colored red when mail arrive. But 시월애‘s mail box is just a hinged door.
4. differences & commons
1) Character
2) Romance
① communication ways
This is the scene to communicate each other by mails.
This is leading 2 movie's main story.
In 시월애, main