kasumii

In both drama the mc goes back to the past (in different ways). High school, romance,regrets, studying etc are all common themes between the two

Same premise especially because of the theme of focusing on studying to make up for the mc's regrets.

office romance
in both drama both the title and the plot showcase an important focal age point for the main character.

female centered plot about revenge/justice.
in both series the plot focuses on female friendship and bond throughout various instances in life despite their lives' various differences or similarities with a dash of comedy.

-they are both adaptations
-time travel theme
-bromance
-there are some similarities between their main characters' dynamics
-"magical"shops

both are fantasy/supernatural drama centered around a magical shop with main characters that clash but also compliment each other. also they both are adaptations.

mostly because:

1. in both drama there are flower demons and deities. even one or both the main characters are such
2. they are both xianxia

both drama showcase chasing your dreams vs reality and a love that no matter whether the outcome was good or not you can't help but wonder if it was worth it. a romance that stays with the people involved for years and years after. whether they end up together or not(no spoilers) all that love was true.

both drama are very realistic over how flawed relationships are, how flawed and disappointingly frustrating people are and how love no matter how powerful it is one day may just become a memory. you may not agree or be satisfied with how things are handled especially towards the endings but once again you have to admire the raw realism of the storylines. whether each drama is a waste of time or not depends on how you view the world and what kind of romance stories you like.

the cute and cool pairing, the fateful dramatic first encounter, the dark side of the fls (though they appear in different ways) and sometimes even the atmosphere they both deliver.

both drama are about timetraveling into the body of another person,both fls land in the middle of the original body's adversities and find romance as they try to adapt in a completely different time period and environment.
Anyone watching Good Heavens should definitely give Love destiny a try. it is actually so popular that they even mention the drama in the first episode of Good Heavens.

pairing studying and fighting really reminds me of old j drama like gokusen or rookies. teaching students who know how to fight and not study or the students who are good at fighting find out how studying can help their life on the long run