Suffering from family problems and boy troubles, Ritsuko had a troublesome past. Ritsuko lived in the countryside of Osaka with her parents and her brother, Reiji. At the start of her second year in junior high, her parents’ relationship quickly deteriorated. It began with her mother's growing suspicions of her husband regarding adultery. Soon, Ritsuko and Reiji found their parents screaming at each other almost every single day. Their father, Hiroyuki, started to stay away from home for longer periods at a time. Instead of coming home after work, he would head to the bars to drink away his sorrows.
About five months into his drinking escapades, a woman came to Ritsuko's house to speak with Ritsuko's mother, Mutsumi. With Reiji and Ritsuko listening in the other room, Mutsumi was told about Hiroyuki's affair and the pregnancy that had resulted. Mutsumi was hysterical. She began screaming at her husband's mistress, eventually running the woman off of the property.
Their father did not come home that night. It took him a whole month before he had the nerve to come pack his things, doing so when Mutsumi had gone out for groceries and only the kids were home. He was leaving to move into the heart of Osaka with his mistress and her kid.
With Hiroyuki gone, things did not quiet down. The fights started again, this time between Reiji and their mother. In just a few weeks since Hiroyuki had moved out, Reiji was packing his bags to move in with their father. Ritsuko would go visit Reiji and her father often, being close to both of them. Reiji told her that things weren't much different with his father than was with his mother. Eventually, Reiji decided that it would be best to move in his their aunt in Kyoto.
Ritsuko was devastated that her brother would be moving far away from her. He had been her best friend since childhood. To make matters worse, Ritsuko's long time boyfriend, Asaba Tsuaki, went missing. She was told by close friends of his that he died from a drug overdose and that the funeral was kept very private among the immediate family, not wanting their reputation soiled. She questioned the family, but before getting a final answer, they moved away. Ritsuko felt abandoned.
Reiji drifted from his father's house and the aunt in Kyoto's house several times. He never visited his mother, for he blamed her for the divorce. Ritsuko hardly got to see him anymore. Then, just before beginning her high school career, Mutsumi thought it would be best for Ritsuko and her to move to Tokyo. Ritsuko was repulsed by the very idea. She would never get to see her father or her brother anymore living at Tokyo. Regardless, they made the move, and Ritsuko got her entrance exams in to Gakuin High just in time.