He Xu × He Chu
The only reason He Xu keeps living is that her younger sister needs her.
He Chu is very obedient and has always played along.
Her older sister likes taking care of her, so she acts helpless. Her older sister enjoys being in control, so she obeys.
But no one could have imagined that He Xu would suddenly stop playing along.
Well, the one who breaks the balance first has to pay the price.
Content warnings: Older woman/younger woman, eight-year age gap, more to be added.
Theme: Strive to become an outstanding person and contribute to society