In the 1990s, a brother and sister lived with their grandmother. The sister was in the second grade of junior high school and the brother was in the third year of high school. The grandmother was frail and sick, and the brother took care of his sister. Later, because her father owed money to a loan shark during his lifetime, the loan shark arrested his sister, and his brother was beaten into a vegetative state to protect his sister.
Purpose: to kill free time