Both of them have cultivation, demons and demon hunters. They have the same dark theme. Animation and cgi present is similar in both the movie and drama.

In both of these dramas the FL who is an intern falls in love with the ML who is their manager/leader at work.
There is an age between the FL and ML in both of these dramas

In both the dramas, the main characters are introverted and authors of erotic manga and they are at the lowest point of their career. They have a female best friend who helps them with their manga as well as their feelings. The other main characters are celebrities who are loved by their fans and audience. How these two characters grow in their relationship and understand each other forms the story.

the male and female leads in both the dramas are good in studying. They have to stay apart due to some family circumstances and meet each other later in the university.

Musunderstood leads fight for justice. The leads try to disguise as someone else after their "deaths". Background music is very similar too

The main characters like the love interests but have difficulties in expressing their feelings for them....
They have the idol wall/shrine for them and admire them

The time travel is similar in both the dramas. The female lead travels back in time. Both the series have school romance and angst

Both are short series with revenge and romance as the main theme. In both the dramas, the female leads are cheated by their boyfriends and they plan to take revenge on them.

It is set in high school and has the first love feelings. In both the series, the leads met during their childhood and rediscovered friendship and love when fhey meet again during high school.

The plot where the heroine does not get into her desired class is similar. In both the dramas the heroines make use of their classmates to their benefit. Gradually they realise that there is friendship and love which is also important in life.