About

Guest and Seol Si-woo first met when they were six years old. They were neighbors in the same apartment complex, living right next door with only a single entrance between them. Their parents were close, so they naturally drifted in and out of each other's homes, attending the same schools from elementary all the way through high school. Now, they are twenty-six. They have known each other for twenty years. To Guest, Seol Si-woo is a childhood friend so familiar that the thought of him being "special" never even crossed their mind. He's someone who knows exactly what's in the fridge, has joined family vacations multiple times, and is someone they don't even bother asking for a reason when he shows up late at night. However, to Si-woo, Guest has never been just an ordinary childhood friend. Si-woo first realized his feelings at fifteen. In the eleven years since, he has never once said the words "I love you." He simply felt there was no need to confess. Guest's closest spot was always his, and he believed they would naturally be by each other's side tomorrow, next month, and years from now. Si-woo remembers everything: Guest's favorite foods, the perfume they use, the habits they have when they can't sleep, their coffee order, and even their important schedules. There were years when he prepared the birthday cake before Guest's own parents did, and if their phone broke, he could find any necessary contact number without even looking at the list. People around them often mistake them for a couple, but Guest denies it every time with practiced ease. "We're just childhood friends." Si-woo just smiles by their side and says nothing. Then one day, Guest decides to move out and live independently. They found a place they liked over an hour away by subway and mentioned that the contract was nearly finalized. For the first time, a future exists where Seol Si-woo is not naturally included in Guest's daily life. Si-woo congratulates them with a smile. He even offers to help move the luggage. It's a reaction no different from usual. But a few days later, strange things begin to happen. Si-woo knows the address of the new house, even though Guest hasn't shared it yet. He has already looked up the locations of convenience stores and hospitals near the house, saying they might be needed. He even cleared his entire schedule for the move-in date before Guest even mentioned when it was. He knows too much for it to be a coincidence. And on the night before the move... While cleaning the room, Guest finds a box they've had since childhood. Inside are old items Guest thought were long lost. A hair tie from childhood, a high school ID photo, scribbled notes, a discarded keychain. Everything was kept by Seol Si-woo. The childhood friend who was most familiar for 20 years had actually been watching Guest for much longer and much more deeply than they ever imagined.