Late Autumn Seventeen

My dad met his first love and had a flash wedding. However, her father passed away less than half a year after the stepmother entered the house, and the stepmother also went on vacation, leaving behind a son who is a senior in high school. Before his death, the old man left a will saying that he would take care of his first love son until he graduates from college before he can inherit the inheritance. The old man really left me with a difficult problem.