The conflict between Saki and her sister was an important part of the story. In the novel, Saki's sister was a mahjong master and an excellent student at school. However, the relationship between the two was very tense. The main reason was that Saki's love for mahjong exceeded his attention to his sister. In the story, Saki won many mahjong tournaments and she was very proud of it and often showed off her achievements to her sister. His sister hoped that Saki could focus on his studies and thought that mahjong was just a hobby. The conflict between the two gradually deepened and finally broke out into a fierce quarrel. Although the conflict was eventually resolved, the relationship between Saki and her sister was still very tense. Saki in the novel also felt guilty and confused. She began to wonder if her love for mahjong was really worth paying such a high price. The conflict between Saki and her sister in Mahjong Genius Girl was a dramatic and conflicted plot that showed the important balance between mahjong and studies through the interaction between the two.