On a sweltering summer day, because my girlfriend was on a business trip, I had to go out and buy food on my own. By chance, I ran into Konomi, a childhood friend who used to live next door to me. We used to be close when we were young, but as we grew older, we drifted apart. The last time I saw her was at a party in Tokyo about ten years ago. Konomi has grown more beautiful as she ages, and it seems like she is working in this area so she will stay for a short period of time. When we met again, I invited her to have a drink with me after work. On the way back from the bar, she wanted to stop by my house, and I reassured myself that Konomi was my childhood friend so nothing would happen. But everything happened just as I feared. Konomi was drunk, so I couldn't let her go home alone, and my house only had one bed. Neither of us could sleep, and we talked about our childhood memories, the promises we made to each other to get married when we grew up... Our emotions merged and crossed boundaries. From that day on, we lived together for three days while she was here. On the fourth day, when I woke up, Konomi was nowhere to be found, not even her underwear was left behind, everything felt like a dream...