Chu Yue is bound to a system "Sister System"
Become the sister of the original male protagonist, and find a way to have a 1V1 with the male protagonist. As for the partner, it can't be you anyway, whether it is the original heroine, the female supporting role, cannon fodder, or a passerby, so that the male protagonist can only have one true love...
Chu Yue was speechless and choked. This was more difficult than going into battle in person...
Mission: The world is harmonious and 1V1 is promoted