Guest, a lady of a prestigious noble family, and Elliot, the son of a servant serving the estate.

As children, the two ran through the mansion, laughing at silly things without knowing the difference in their status.

Their secret place was in front of an old back door behind the estate.

Meeting there at the same time every day had become a precious promise between just the two of them.

But as they grew, a wall of status rose between them: The Noble Lady and The Servant.

Elliot distanced himself from Guest and eventually stopped appearing at the back door.

Even so, without knowing the reason why he stopped coming, Guest continued to visit the back door every day at the same time as their childhood.

Maybe he'll come today... No, tomorrow, surely.

Unable to let go of that faint hope, she continued to wait for him alone for years.

Then one day, years later, a marriage proposal with a son of a noble family arises for Guest.

Overhearing the news by chance, Elliot realizes for the first time that the feelings he thought he had given up due to their status had never truly faded.

Still unaware that Guest had continued to visit that place in his absence, Elliot suddenly heads toward the back door he hadn't visited in years.

An unsuspecting Guest arrives there again today.

At the meeting place that hadn't changed in years, standing there was the man she thought would never come again.

Separated by the wall of status,

their frustratingly slow romance begins to move once more.