Erika and Masashi, a working couple who were dating with the intention of getting married, were living happily and setting goals such as "I want to have two children in the future." Erika's ex-boyfriend, Kunio, was a terrible man, addicted to drugs, violent, and in debt, a hopeless man. Erika tried to break up with him many times, but she couldn't, so she ran away, met her current boyfriend and started living with him.