Due to low interest rates and global growth rates, economic inequality is intensifying worldwide. In particular, during COVID-19 crisis, the gap between the rich and poor keeps widening. There is a phenomenon in which the rich become richer and the poor become poorer. Growing young generations are investing in stocks and real estate and go so far as to invest with debt leveraging. Many people say “If I had bought a house at that time”, “If I had bought stocks at that time”, or “If I had bough...