After Breaking Up with the Blonde Overachiever, I Saved the World

She was a gorgeous, wealthy woman and a national goddess. Seven years ago, a blond bastard dumped her.

The scumbag who left her vanished without a trace, and she never heard from him again.

Unable to let it go, she dedicated herself to finding a man better than him in every way, but things never worked out.

The men who were richer than him had personalities she didn't like. The ones who were more handsome couldn't speak Russian. The ones who were more considerate couldn't fight as well as he could. Nothing ever measured up.

Damn it, was there really no way she could fall in love with another man?!

The actual blurb:

Fujimori Nana was inexplicably pulled into the Fusion System at the age of fifteen. Ever since, she has played all kinds of NPCs. Others were dragged into the System alongside her: her childhood friend Atobe, the basketball-world big shot Akashi, and Naganoba, a demon hunter from the world of yokai, among many others. All of them are exceptional talents in their respective worlds.

But they have no choice but to work for the System. They need to raise the world's fusion progress to keep their worlds from being destroyed.

Keep up the good work, workers!

Content warnings:

1. The police academy group appears, and everyone survives.

2. The female lead is a Mary Sue.

3. Her love interest is definitely the blond bastard.

Theme: Saving the world and falling in love are both important.