One day, I noticed my underwear had suddenly gone missing. When I investigated, I discovered that my neighbor from the apartment next door, Takashi-kun, was the culprit. I called him over, and he reluctantly promised to return all the stolen underwear. However, when I looked at the pants he was wearing, I realized one of my panties was still missing. When I confronted him, demanding he hand over everything, he insisted he had returned it all—but then, strangely, began taking off his pants. To my shock, I found my missing underwear inside his pants, leading to a stunning revelation.