Sachi no Tenbin

Ayase Yuki is the very definition of a plain girl.
She dreams of a happy married life with her boyfriend since her high school days. Devoted to him, Yuki works everyday to give him her all.

However, that dream came to an abrupt end when he uttered the words, "let's break up".
Thrown away like a used up, dirty rag, Yuki loses all hope as she stands listlessly in the pouring rain.

The one who came to speak to her wasn't a parent or a best friend, but a beautiful young man she had never met before.
The young man smiled as he made a proposal:

"Are you going to just end it all like your run-of-the-mill tragic heroine? Or will you cooperate with me and get your revenge?"

What conclusion awaits? A "clichéd tragedy" or "revenge"?
Her days of choice-making begins...

[Translation of the official website's story summary.]