Erika and Masashi, a couple of working adults who were dating with the intention of marriage, happily set goals like 'We want two children in the future' and lived their lives. Erika's ex-boyfriend, Kunio, was the worst kind of man, dealing with drugs, violence, and debt—an utterly hopeless loser. No matter how many times Erika tried to break up with him, she couldn't, so she ran away and ended up meeting her current boyfriend and living together.
