Get that good ending gurl

i don't have a singe memory of this.
she dates an npc from the story she isekais in, but he's actually someone with a dark past? and he's op? and they work together for the good ending? maybe

Lizia is reincarnated into an otome game world as a mob character. She decides to live with two lives worth of filial piety, however, she has been betrothed to Bernhardt, the last villain in the prince' Route. This is the struggle of Lizia as she tries for a peaceful life.