After I Became the Idiot Female Side Character

[This isn't a high-IQ mystery. It's a wish-fulfillment story.]

Ye Xuan transmigrated into a book, landing in a detective novel as the female supporting character with rock-bottom intelligence: an obstacle to the plot, a foil to the main cast, and the number-one idiot who only knew how to cause trouble.

When she arrived, a desperate bandit had her pinned in a rundown warehouse, facing off against the police through the door.

"Hello, Host. Your mission is to trip up the male and female leads, make their missions go wrong, and constantly act brainless to highlight how smart everyone else in the story is. Your performance will be graded A, B, C, or D. C or above counts as passing."

Ye Xuan: "..."

Thanks for the offer. Goodbye, and don't let the door hit you on the way out.

Then she seized her chance, snatched the knife, beat the bandit until he was calling her Daddy, kicked the warehouse door open, and tossed him straight outside.

The male and female leads and the police officers outside, who were preparing a rescue plan: "???"

Ye Xuan was once a renowned constable of the Six Fan Gate, famous for her ingenuity and for solving one extraordinary case after another.

After transmigrating into the book as an idiot female supporting character, she dutifully followed the plot, using force whenever she could solve something without having to think.

The System trembled. "Host, you've done all the work. What are the male and female leads supposed to do? The, the plot is falling apart, QAQ..."

Ye Xuan: "Is there a problem?"

The System: "N-no problem!"

Then it wept as it drew a huge "A" on her evaluation form.

It was an A, just not the A in A, B, C, D.

Don't ask. The answer is that she has no brains.

Theme: This is an inspirational story.