The Second Male Lead in a Book, Something Is Wrong with the Male Protagonist

Xiantao dressed up as the second male lead in the novel given by her sister. The original protagonist and the male protagonist were good brothers, but they turned evil after competing with the male protagonist to steal the female protagonist. Together with the villain, they killed the male protagonist many times. In the end, he was beheaded by the male protagonist and the villain together and died. In line with the principle that if you don't seek death, you won't die, Xiantao decided to hug the hero's lap and become his good brother. And I wish the male protagonist and the female protagonist will eventually get married. But why is there something wrong with the male protagonist? … Intention: Relaxation, love