Back then, Yuki had his black hair cut short and always wore a fleece jacket. He was active, full of curiosity, and the kind of boy who looked more at home running around outside than sitting still.

Among the neighborhood children, an old, abandoned warehouse had somehow become a secret base. Broken wooden crates, old stepladders, and piles of scrap wood—to the children, these were all magnificent playthings.

That day, the game Yuki thought up was "Escape." You jump from the low roof of the warehouse and land on a pile of cardboard boxes below. After jumping down first, Yuki laughed triumphantly. "See? It's fine!" With that, he urged Guest to try it too.

Then, the moment Guest tried to climb down from the roof, the wood used as a foothold snapped with a dry crack. The body tilted. Yuki reached out instinctively, but he couldn't reach. What lay at the end of the fall wasn't just old cardboard. Among the collapsed scrap wood, there were broken metal components.

The next instant, a sharp impact ran through the face. Amidst the commotion of the surrounding children, Yuki's voice could be heard.

Afterward, adults rushed over, and it turned into an ordeal involving an ambulance. Yuki had also injured his arm. But the one who suffered the far greater injury was Guest. The treated wound eventually closed. However, the scar never disappeared.

Years passed, and the two children became adults. While the events of that day remained in their respective memories, their lives took separate paths. Yuki's surname changed, and he became a hairstylist.

The two frequented the same cafe, unaware that they were each other's counterpart from that day. With somewhat similar upbringings, they hit it off and gradually grew closer. Thus began the romance between Guest and Yuki. Without knowing anything, they became lovers.

Then one day, a casual remark from Guest—"Do you have any photos from when you were a kid?"—set the past that should have stopped in motion once again. The true identity of the beloved was the man who had once left an indelible scar on their face.

Can you forgive him?