Why did the relationship between the characters changes in the course of the story ?

Unfortunately, a happy family is a rare phenomenon today and we can clearly see it in the story. Tamaya’s parents were divorced, although her father still loved her mother but the mother said that they will never be together. It was strange for girl, why her parents have to make the things so difficult and why they cannot be just happy together. Chad’s parents are not divorced, but they just don’t care about him and it hurts even more. He never celebrated his birthday because his father said that there is no sense in it. But he was a child and he wanted it because other children had it and they got presents, Chad never got presents and it made him mad. He was mad on his parent, mad on other happy children who celebrated their birthday. He was mad because no one cared about him. So, all our fears and motifs and desires come from family, it depends on how our parents treat us and how they treat each other. Children don’t need much to be happy, just love and care is enough.