>Both of the drama deals with student and teacher relationship.
>The teacher is older than the student.
>Dark Plot
>Realistic

>Oh Soo Jae and Kuzu no Honkai have similar plotline which is all about the student having a relationship with a teacher
>Both of these drama have older woman which is the teacher and younger man is the student

These dramas are all about creativity and imagination of an author who makes novels by imagining that he is the main character of the story and the girl(s) is the another character in his imagination.
>140 Ji no Koi -< the guy creates twitter novel that consists only 140 character limit but does challenges him to use its creativity. It has only two characters every episodes

>Ano ko no Yume wo mitan desu -< the guy creates his novel in his notebook by referencing the female character with the real life Japanese actresses

> Both male leads are charming in How About a Cup of Coffee and Coffee Ikaga Deshou
> Almost bearing the same title
> Slice of life
> Coffee barista as a job

The story of Hi Soo, Ji Yong and Ja Kyung is very similar to the plot of Pink Lipstick.
=> Hi Soo = Ga Eun
=> Ja Kyung = Mi Ran
=> Ji Yong = Jung Woo

Similarities
>Both female lead are both married
>Of course both makjang
> Betrayal, Revenge, Affairs
>The husbands are still in love with their ex girlfriend
>The children are born out of wedlock -> children of the husband and the ex

> Kanojo wa Kirei datta is the remade of the Korean drama Kanojo wa Kirei datta
> Story about a guy who was fat and became handsome after several years and a girl who is used to be cute but then happens that the company went bankrupt and lives with her friend.

> Both Makjang
> Both the greedy woman doesn't feel guilty stealing the fiancee of their friend
> The woman have an affair in the My MAn's woman while Miss monte cristo, the greedy woman get rid of her friend just to marry the man.

> Both makjang
>The biological mothers meets their child
> Deals with infidelity
> A lot of secrets
> Both high society -> Chaebol and Royalty
> Disapproving in laws

>Yoon Hee and Ha Ryu both sacrificed their studies to support their girlfriend/boyfriend college fees
>Both couple have a child out of wedlock
>However, their lover cheats on them and fells in love with rich man/woman
>Both of them plots revenge on them by falling in love with that sibling of the rich man/woman