She couldn't remember how long ago, she seemed to want to marry that prince very much, but the prince married her sister.
Now, she wants to stand by and watch the prince marry her sister happily. However, who can tell her who this old man is?
An old man held a glass slipper to offer a treasure
She: (⊙o⊙) Isn't this Cinderella's?
Cinderella: Where is my glass slipper?
She smiled, threw the glass slipper in her hand to the ground, and fell apart.
In fact, this is the story of Cinderella's sister who is reborn and marries the king. Try not to be too novice.
The male protagonist is slightly older and is the prince's nominal father, but has no blood relationship with the prince.
The plot may be a little off-putting, and the writing style may be childish, so please bear with me.