This is a family owns a five mother Keiko, the eldest son of the Ming, the eldest daughter Kyoko, the second son of Shigeruand mezzo snow. When the mother moved with her children, she lied that her father had worked overseas for a long time and lived with the eldest son. In fact, there were three "black household" children, and the four children were half-parents. In order to prevent others from discovering the existence of several children, the mother only allowed the eldest son to go out. When the mother goes to work, the responsibility of taking care of her younger siblings falls on the eldest son Ming.
Slowly, the mother came back later and later. Suddenly, one day, the mother told that she already had someone else she liked, and promised to live with the children even if she marries the other party, and she would also provide them with education. One night, the mother suddenly came home drunk, and stopped the children to talk endlessly about the past of herself and the children's father. Seeing how happy the mother was, the children were also very happy and fell asleep peacefully. However, what I did not expect was that when I woke up the next morning, my mother was nowhere to be found. She left 200,000 yen in cash and a short message to Ming, telling him that the family will be taken care of by him in the future. So, from this day on, the four children of "Who も知らない" began a wandering life
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