The Villainous Princess Saves The Doomed Knights. [Promo]

I transmigrated into a fantasy novel where the male protagonist, in his attempt to save the world, lose his comrades ine by one, leading to eventual destruction. My role is a villainous princess with an excessively innocent mind. I obsess over the male lead, pick fights, and eventually die in a demon attack, thus plunging the reputation of the knight order the male lead belongs to into ruin... 'Oh, this isn't a kn...