"Luo Qingguo, did you make my homework book?" The young man tried hard to suppress his anger, betraying him with his trembling fingers. The girl holds a magnifying glass in one hand and the last piece of incomplete evidence in the other. "Hehehehe, that... UFO." Just as the boy was about to move, the girl disappeared with a whoosh. The boy was left alone, looking helplessly at the wreckage in the yard.