Both are dark romance dramas with amoral and possessive MLs, and the FLs are very focused on their respective missions, which involve using the ML. Neither are the most healthy relationships, though the MLs get significant character development. There's a lot of suffering and manipulation, as the leads are not always in positions in which they are powerful. The FLs are a bit like mentors for the prince MLs, though they have their own trauma to deal with. Both are good shows if you want an intense story without black/white morality and romance between two troubled people.
- Vicious ML;
- ML was mistreated in the childhood;
- FL brought light into ML's life;
- Possessive ML
- ML was mistreated in the childhood;
- FL brought light into ML's life;
- Possessive ML
Both have an historical palace setting with a slight twist of the real world (secondary transmigrated character vs. set in a novel) and a complicated anti-hero ML and FL with excellent chemistry in a slow burn romance. Both FLs have a very close relationship with the SFL who is part of the love triangle/reverse harem of the FL's love interest.