She is the female supporting role of a stallion who has escaped death.
"Brothers, I'm sorry... The above operation is to clean up the net, my sister can't push it away!"
He is an upgraded cannon fodder who cannot escape death.
"Well done to the author! I've long been unhappy with this pretentiousness!"
When the replacement female partner meets the original cannon fodder...
Female supporting role: Σ( ° △ °|||)
Cannon fodder:......
"The Overbearing Young Master's Sweetheart Daughter"!