이 프로젝트는 전하지 못한 감정은 어떻게 남는가라는 질문에서 시작되었습니다. 돌보지 않은 감정은 익지 않고 상해버린다고 믿었기에, 이 작업은 보내지 못한 마음에 도착지를 만들어주고자 한 시도입니다. 책은 편지 모음의 형식을 따르며, 봉투와 엽서를 주요 구조로 사용합니다. 각 페이지는 하나의 봉투이고, 봉투 안에는 엽서 한 장이 들어 있습니다. 모든 봉투는 직접 수작업으로 구멍을 뚫어 제본되었으며, 글과 그림뿐 아니라 책의 물성 자체에도 개인적인 흔적이 담겨 있습니다. 분해가 가능하며, 봉투 사이에 개인적인 물건을 끼워 넣거나 자신의 감정을 보관할 수 있습니다. 이 책은 읽는 책이자, 감정을 담아두는 우편함입니다.

작업의 밀도와 감정적 노동을 고려해 총 100부만 제작되었으며, 각 권은 1부터 100까지의 에디션 넘버가 수기로 기록되어 있습니다. 모든 책이 서로 다른 이야기와 기억으로 채워지기를 의도했습니다.

순서에 얽매이지 않고 자유롭게 페이지를 열 수 있습니다. 우연히 편지를 받듯, 혹은 우편함을 확인하듯 책을 경험하기를 바랍니다. 일부 엽서는 누군가에게 전하고 싶은 문장이 될 수도 있으며, 이를 다시 편지로 써 보내거나 각자의 방식으로 해석해도 좋습니다.

마지막 봉투에는 빈 엽서 한 장이 들어 있습니다.
그 위에는 다음 문장이 적혀 있습니다.
“부디, 끝내 보내지 못한 편지가 되지 않기를.”

이 책은 말하지 않은 감정이 읽히는 순간 발생하는 모순을 다룹니다. 숨겨진 편지이면서 동시에 열람되는 기록으로서, 사랑, 진심, 기억, 그리고 사라지기 전의 감정을 어떻게 남길 것인가에 대해 질문합니다.

I once thought that unspoken feelings, when left unattended, don't mature—they spoil.
This project began with the hope that these unsent emotions could transform into messages addressed to past versions of myself, to certain moments, to those I've loved, or to anyone who might receive them. I also wanted the title of this book to carry a sense of contradiction: that by being read, it defies its own premise. If these feelings can reach someone—anyone—then perhaps they won't remain stagnant or decay. From this idea, I envisioned a book structured like a collection of letters, utilizing envelopes and postcards to effectively convey this concept. In essence, this book is a kind of postcard book—a mailbox for hidden sentiments and unsent letters.
        Each page of the book is an envelope. I manually punched holes in every envelope and bound them together. Inside each envelope, I placed a postcard. Just as my thoughts and illustrations fill the content, I wanted the physical form of the book to be imbued with my personal touch. The book is bound with bookbinding screws, allowing it to be disassembled if desired. I also considered that you might tuck personal items between the envelopes or store their own feelings inside them.
        Given the labor-intensive nature of this project, and the emotional investment it required, I decided to create only 100 copies. On the back of the band wrapped around the cover, I inscribed edition numbers from 1 to 100. I hope each of these 100 books will be filled with unique stories and love.
        I encourage you to open random pages, as if receiving a letter at that moment. Of course, reading in order is fine too, but I hope you won't feel constrained. Approach it as if you're peeking into hidden feelings or checking the mailbox with anticipation.
I created this with the thought that some postcards might be messages you'd want to share with others. If certain passages resonate with you, or if there are sentences you'd like to convey, please write them as letters to someone. I hope you'll personalize the book in your own way. Perhaps the true completion of this book lies in these 100 copies, each filled with our cherished emotions.

When you open the final envelope, you'll find a blank postcard.
I intentionally left it empty, accompanied by the sentence:
"May it be the letter you never forget to send."
I hope you'll fill it with your unspoken feelings and send it, rather than letting it remain hidden or forgotten. Of course, you're welcome to send a reply to me as well. I'll make sure to read each one carefully. For you, the most important page might be the very last one.
        The moment I decided to materialize this into a physical book, I realized that in the process of editing and refining my writing, my sincerity might have already been processed. Writing letters or essays is, in a way, about editing our feelings into beautiful expressions. I wanted to articulate love and emotions more gracefully, to embrace them more tightly. Sometimes, this leads to unintended embellishments or adaptations; other times, I hope nothing is altered, preserving the rawness.
        Regardless, everything tends to fade over time. It's always a challenge—and a precious endeavor—to determine how best to preserve and convey these fading elements. I aimed to fill this work with gentle words, reflecting the love and kindness I've received, and the warmth I wish to share and embody. Though it may fall short, I created it with that aspiration.

Some have asked, 
"Are these all unsent letters?" or "Are they directed at someone specific?"

To that, I explain:
Sometimes, they're messages to my past self or reflections on certain moments.
They can be letters to the future, anonymous messages, or sentences without a clear recipient. They encompass words for those I've loved and those I love now, heartfelt messages for family and friends. Through these letters and this book, I hope to foster more letters, becoming a warmer and kinder person.

I also wanted the title of this book to embody various 'contradictions' when read. Every sentence, every piece of writing and illustration, represents different forms of love—the exchange of feelings, the response to affection, the desire to convey sincerity. Paradoxically, it weaves together both unspoken and intended emotions. I still hold these feelings dearly and warmly, hoping that as readers uncover these hidden letters, they transform into new expressions of love.