Recommendations

I would say both are episodic dramas cause there are different cases/stories for every three/four episodes but there is still main plot throughout whole series
Main characters of two shows gives the same vibe, they understand minds of killers/monsters while being really kind hearted, both of them have above average skills (hearing/drawing) and they're very observant and ingenious
Both shows have amazing mystery elements and outstanding ways to solve problems
Also good music and found family trope

They FL both have terminal illnesses
They both have ML willing to help them overcome challenges.
They both involve time altering whereby In marry my husband she does and wakes up 10 years ago and decides to change her fate... Similar with this hoping her story would change and she might be helped

Both are mini dramas in which the FL enters a fictional world in which she must repeatedly attempt to assassin the ML in order to finish the story and go home.

Both are mini dramas in which the FL enters a fictional world in which she must repeatedly attempt to assassin the ML in order to finish the story and go home.

Both are mini dramas in which the FL is betrayed and returns for revenge by becoming a concubine of a powerful older man, becoming entangled with the ML, that man's son. Both are Republican Era set mini dramas.

Both are mini dramas in which the FL is betrayed and returns for revenge by becoming a concubine of a powerful older man, reuniting with the ML, that man's son, who she loved years ago. Both are Republican Era set mini dramas.

Both are mini dramas in which the FL is betrayed and returns for revenge by becoming a concubine of a powerful older man, reuniting with the ML, that man's son, who she loved years ago. Both are Republican Era set mini dramas.

Both are mini dramas in which the FL is betrayed and returns for revenge against the man she once loved by marrying his father/father-in law.

Both have main riders based on the Japanese Rhinoceros Beetle. Both the protagonists are cheeky, Stronger in a more playful way while Kabuto is a very self confident rider. They are different as well as kabuto is the about super speed and stronger about electricity.

Jeong Nyeon character in webtoon was inspired by Kim Tae Ri's Sook Hee in The Handmaiden. Both are women centric and starred by South Korean actress Kim Tae Ri.

It’s similar that it had the same style of humor. Like they are people, they enjoy the same style of humor. Both are funny dramas but DFF is more romance-centered while Gaus is more centered on each office worker and their life in the office.
Gaus also has romance too btw.

Both of these dramas have strong and decisive female leads. The FLs are also unconventional, and the story does explore some philosophical topics in the morally grey areas of how life is structured.

Both FL were accidentally intertwined with the ML and boom, fate was initiated!

Both ML were kinda of scheming too. These couples is combo to the maximum!

The drama is also talking about a revenge. She comes in and try to seek revenge on those who wronged her

giving same ASPD FL vibe