To sum it up quickly a girl gets basically dumped by this prince and then goes to like a villain who is I think a demon king and asks him to marry her. I'm not good at explaining things.
http://www.mangago.zone/read-manga/i_m_a_villainous_daughter_so_i_m_going_to_keep_the_last_boss/
Thank you (▰˘◡˘▰)
To sum it up quickly a girl gets basically dumped by this prince and then goes to like a villain who is I think a demon king and asks him to marry her. I'm not good at explaining things.