After passing the school, she sent her younger brother to take the college entrance examination, but he was attracted by his friend. It was wonderful to have his company in these youthful days, but in the end they broke up because of a misunderstanding. From then on, her world became foggy.
Two years later, she (they) reunited at the playground. Her brother's actions solved their misunderstanding and got back together.
Concept: sister-brother love