Responses
https://www.mangago.zone/read-manga/the_executed_sage_is_reincarnated_as_a_lich_and_starts_an_all_out_war/ (murdered hero becomes new demon king)
https://www.mangago.zone/read-manga/kuroshitsuji/ (kid that solves supernatural cases for the queen. his motivation is finding and getting revenge on those that ruined his family and sacrificed him to a demon)
I've been looking for some good recs of revenge plots, with a little romance. Even better if they have a two faced villainess!