Aoki Yui and Sakurai yukinako belonged to the category of 'one mountain can not accommodate two tigers', let alone two female Tigers. Because the age difference was not big, the cultivation level was also similar, and even more coincidentally, the family status was the same, this became an example that outsiders often used to compare.
Over time, even the elders in the family paid attention to it and encouraged their own children to surpass the competitors of other families and step on them.
Of course, if that was the case, Aoki Yui would not be so naive. The real reason why she stood against Sakurai yukinako was because of the break between the Aoki family and the Sakurai family.
The Aoki family and the Sakurai family had a business conflict, and their relationship was not very good. Many years ago, a young lady of the Aoki family was playing outside and was drugged by a man from the Sakurai family ... The two families started fighting and many people died.