Recommendations

Similarities:-
1. FL is reincarnated while ML is an Immortal
2. FL caused the ML to become an Immortal
3. FL is reincarnated to become a good hearted girl
4. ML doesn't like FL
5. ML wants to die using FL

Story between two best friends and their strong friendship. In both, the FLs knew each other from their childhood. Despite their hate, misunderstandings, they both love (not romantically) and care for each other so much.

Relationship between a ghost and human
Handsome leads
Both are BL
Genres&Tags in common:
G: Romance, Supernatural

Relationship between a ghost and human
Handsome leads
Both are BL
Genres&Tags in common:
G: Romance, Supernatural

Both are South Korean dramas.
- Smart and Rich CEOs as MLs. Introverted Boss's ML has some problems about his social life.
- Poor FLs work for him
- Boss-Employee Relationship
- Office Romance

Girl finding about her mother’s first love through her diary…

Both are South Korean dramas.
- Smart and Rich CEOs as MLs
- Poor FLs work for him
- Boss-Employee Relationship
- Office Romance

Both Rich and Poor involved.
- Rich Man, Poor Woman is Japanese drama. A Business Proposal is South Korean drama.
- Smart CEOs as MLs
- Poor but hardworking FLs

- Both MLs are CEO 
- Boss-Employee Relationship, Office Romance
- Boss & Me was my first Chinese drama.
- Sweet love stories

Both are about a young inexperience man learning life experience from an experience old man.
Their story together were very sweet and heartwarming.
Valuable life journey and story
Must watch

Both are about a trouble hardworking young man meet an old but full of valuable life experience.
The old man loving kindness fully accepted the young man
Heartwarming, sweet story. Must watch

Both dramas have nice romance , (I liked CFY better)
Main leads deal with difficulties
Brain tumor
Memory loss after brain operation

Both are about older gentleman touches the heart of young inexperience man.
Life lesson, heartwarming, sweet story.
Very loving story.
Must watch

Older man and young man relationship
Valuable life lesson
Sweet, loving story
Heartwarming story
Old man full of life long experience

An elderly gentleman and a young man relationship grow. The love and caring of an old experience man touchers young man heart, his journey changed from the valuable relationship