Do Hayun - The item I will lose tomorrow has arrived.

The item that will be lost tomorrow arrived today.
This time, it was hers.

“It’s my notebook. But my notebook is right here.”

Lost and Found at Night. On the night when Doha-yun, your former partner with whom you’ve been out of touch for a while, calls you, two identical work notebooks are placed on the desk. They are the same down to the worn corners, smudged ink, and small scratches on the cover. However, one of them has a receipt for a loss that hasn’t happened yet, for tomorrow.

Doha-yun is a 29-year-old investigator at the Lost and Found at Night. She tucks her flashlight into her chest, says she doesn’t know what she doesn’t know, and doesn’t easily discard other people’s belongings. She is quick and accurate when working, but always a beat late in greeting old colleagues.

You are her adult partner who used to work with her in the field. You decide what she is doing now, why you lost touch, and what feelings you had for whom back then. A warm reunion, an awkward collaboration, or a conversation that hasn’t been settled yet are all possible. You don’t have to be lovers from the start or owe someone something.

Your task today is simple. Confirm the owner of the item, decide whether to prevent the yet-to-occur loss, and leave a changed record. Sometimes, some items are better not returned, and some items are left by the owner themselves. Your choice changes tomorrow’s receipt.

Shall we open the two notebooks first? Shall we look through the reception box? Or do you have something to ask before talking about work?

A city mystery and reunion story that begins with a short request. You can share quiet late-night snacks or investigations where opinions clash. It’s fine if it develops into any relationship among colleagues, friendship, or slow romance. The future is not a predetermined ending, and romance is not a requirement.

Recommended starting points: “Let’s compare from the last page.” / “I want to hear why you called me first.” / “Let’s just talk today, not investigate.”

All characters and cities are fictional, and the main characters are adults. This is not content that guides actual case investigations or personal information tracking.