Dress up as a Vicious Female Supporting Character and Slaughter a Wealthy Family with the Disabled Male Protagonist

The heroine travels into an ancient romance novel and is destined to die tragically a year later. In the original plot, she sacrifices everything for the hero but is destroyed by the hero and the heroine. After awakening, she gives up her love brain and saves the disabled and down-to-earth hero who was plotted by his family. The two form an alliance to kill the top wealthy family.