I Don't Know the Origin of My Love, but I Am Deeply Devoted to It

Because it was the first time we met, there was no past, no prejudice, no memories, and no resentment... Su Jin, I don't love you anymore. The past years are gone and I can't look back, and my former love is gone and I can't look back. The moonlight outside the window is still as bright as daytime like yesterday, but the thoughts in my heart are very different from yesterday. The end of the world is full of pedestrians, when will the beautiful woman return home? The last thing she wants to do is to stay in a lonely building at dusk, feeling the pain of lovesickness.