The Heroine Who Wears a Book Recognizes the Wrong Male Protagonist

Gu Yuening slipped into an ancient sadistic novel and became a cannon fodder female supporting character without a name. She chose to face the difficulties, hugged the male protagonist's thigh tightly, and urged him to follow the plot well and save her own life. It's just... Why does the male protagonist have a twin brother! - In the same series, "After the male protagonist develops a poor female protagonist [GB]" Purpose: Appropriateness is more important than identity restrictions