Both enemies to lovers. FL infiltrates the royalty to seduce ML in order to kill him for revenge for killing her parents. MLs are red flags in both. MLs use wheelchairs as a coverup but they are also injured.

Both have misunderstood MLs who are hated for supposedly being evil. FL hates the ML in both for destroying her people and try to kill the ML but eventually fall for him. The ML and FL are smart and scheming in both. ML is a black flag in both and obsessed with FL

Both enemies to lovers.
ML encourages FL to kill him for revenge just so she has a reason to live.
Both MLs are obsessed with FL
Both historical.

In both, the ML fell first and hard. The ML in both was deeply in love with FL for a long time before she falls for him. Both are office romances. MLs are introverted and don’t share much but have deep feelings. FLs are livelier although one is darker than the other.

If a scene of a scorned woman risking death to beat the drum outside the city gates in order to seek justice from the emperor moves you to tears, these are the dramas to watch.

The dark aesthetics are similar only that Atypical Family actually has fantasy elements. FL in IONTBO has mental health issues and in Atypical Family it's the ML. FL in IONTBO is prickly and in AF it is the ML. Both are quirky in tone and slightly darkly comedic

Both dramas are set in the summer in the countryside. Both dramas have three siblings who make “trouble” for their parents, each with their own stories. Each drama has the one sibling who seems to be normal but makes the most trouble amongst the three. One sibling in each falls for the local guy, though the personalities and background of the MLs are different.

ML's in both dramas are former heads of assassin organisations that work for the crown. Both have ruthless rules of going against the organisation. ML's in both have superior martial art skills. Both couples have a mature relationship where they innately understand each other.

Supernatural ML and FL are similar, both supernatural beings who must do jobs given to them by higher powers or they suffer consequences.

Supernatural and FL from each drama have sarcastic, slightly narcissistic personalities.

Both couples bicker a lot

Gorgeous fashion

Supernaturals from both shows have staff who they are close to like family

Both FL are rich heiresses with a nasty family struggling to take over the company

Both MLs are supernatural beings whose fate depends on the FL. They both become her bodyguard

Both couples bicker a lot and fight but have great chemistry

The fashion >>>

They both have characters standing on the line between good and evil. In Evilive one ML is a lawyer and The Worst of Evil has a cop. They both meet get involved with organised crime gangsters get connected to their ruthless leaders. Evilive is set in the aughts while TWOE is set in the 90s. They are both violent as well.

The FL goes undercover to the police while in TWE ML goes undercover in a criminal organisation. Both leads risk losing themselves undercover as they make new connections