Group 1 - The article discusses a new trend among South Korean youth, who have shifted their focus from traditional measures of success like appearance and education to a collective identity of frugality, forming groups called "beggar rooms" on Kakao Talk [1][10][12] - In these groups, members report their daily expenses, with strict rules against spending, creating a culture of financial discipline and mutual accountability [2][3][15] - The phenomenon reflects a broader societal shift where young people are embracing a minimalist lifestyle, prioritizing savings over consumption, and redefining social status through frugality [10][59][80] Group 2 - The article highlights the extreme measures taken by members of the "beggar rooms," such as meticulously tracking every expense and publicly shaming those who overspend, creating a form of social pressure [19][20][25] - It notes that this trend is a response to economic challenges faced by young South Koreans, including high living costs, low wages, and a significant debt burden, leading to a collective mindset of survival [69][72][74] - The shift from a "YOLO" (You Only Live Once) mentality to a "YONO" (You Only Need One) approach signifies a drastic change in consumer behavior, where even small luxuries are scrutinized and often avoided [67][75][78]