It's basically the prequel.
It helps you understand the characters better and the storyline.
I need to get 100 characters so ignore this sentence.

- same Era (Chinese Republican Era)
- Female lead is living a double life
- Female lead seeks answers and revenge

Simliar because:

- Modern world with superpowers
- ML gains more powers and maturity during the progessing of the drama
- Wuxia elements despite being modern world characters
- Two different worlds
- Comedy elements

- both dramas deal with police trying to take out a family of criminals.
- most of the cast is the same.
- similiar plot lines.

- Bromance
- Fantasy/Supernatural
- Teamwork/Supernatural team
- Each Teammate has special abilities
- Special Effects
-

- INTO1's reality show for their Born to Fly/ There is no free lunch comeback.
- All members who won in Produce Camp 2021 are in it and having fun.
- They play fun games and talk.

- Music show.
- Mika is in both.
- Performances are graded by the audience
- There are eliminations
- Idk Mika is in it and if you like music then you might like the show too since it has many different e-music genres in it.

- School drama.
- Unsolved mystery in the school.
- Group of students seek the truth.
- Teacher helps them.
- Dangerous situations for the students.

- Both are police dramas.
- The mentor/rookie relationship grows stronger.
- Romance between the rookies.
- They are fighting crime.
- Past Trauma of the main lead.

- Both are fantasy based with the main lead gaining powers
- The romance in both dramas is very slight, with the focus being on the story.
- Both are costume dramas.
- Both have a brother-sister pair as the side characters.
- The main leads powers were both a result of a plot twist.

Both female leads are short and strong and never lose their interest in the male lead. They both provide a lot of funny moments, however in "All I want for love is you" its more focused on the romance part of the series. You also get to know the classmates and their relationships in both series.