After Transmigrating into a Book, Five Brothers Spoil Me Rotten

What's it like to transmigrate into a supporting female character in a novel about a beloved girl?

The five older brothers dote on the heroine, Mom and Dad adore her, and even the guy who's had a crush on the heroine for years is deeply in love with her.

The supporting female character in the book gets jealous, turns evil, and relentlessly attacks the heroine, until everyone despises her...

Knowing how the supporting character's story ends, Song Jin remains expressionless.

Five older brothers who only care about the heroine? She can have them.

Parents who favor the heroine endlessly? She can have them too.

On her first day after transmigrating, Song Jin plans to run away from home and give the whole family to the heroine.

But... why are the brothers who used to ignore her now weeping and begging her to come home?

Why is the villain, who was supposed to die alone without ever marrying, suddenly insisting that he will marry only her?

Why has the plot gone so badly off track?

It seems the heroine's beloved-by-all halo has broken.