Duan Yu, who was expelled from home, unexpectedly entered the crew and met Xiao Qing, and became the person who replaced Xiao Qing in Xiao Qing's memory. As they got along, Xiao Qing gradually fell in love with him, but Duan Yu knew about it. Later, the two reunited with only one sentence: "Long time no see".
Idea: An idea that comes to mind by chance