In both series ..for the sake of pleasing the female lead..btge male lead likes to throw money at her..
She likes money best besides her career.. he has them.
The co-habitate based on a a contract.

They are in love, but make slow steps.

The female lead is someone who loves money.. the male lead is someone who has them.. they co-habitate and have a relationship, based on contract.

It has a main lead, which is a very famous celebrity and a female lead,cwhich works many different angles to try to make her career good..but fails.
Both make leads are lonely and arrogant...

They are about two lonely people who find comfort one into another. The female is trying to success in her her career, while failing miserably.. the male is giving a great "boss vibes".. Both enjoy eating together. The male is older.. the female younger.
Then the love comes.

Both have a female Korean celebrity (an actress) falling in love into an ordinary person and learning to love him the way he is (even if he isn't perfect or has a status).

Both have younger female protagonist and an older male protagonist.
They are very different, but might bring the best in themself by the long run.

A young, foolish, vibrant person.. with a dream for her profession falls for an older guy who is already stable and settled in life and might have a past.

They are a romance between an older male and of a lot of a younger female person.
The male protagonist can ensure the life of the female one (have money) and love food and cooking.
The female protagonist us not just young.., but gives up younger vibes.. very vibrant..sometimes foolish..dedicated to her profession.
One of them is a cook by profession.

Both have a very attractive female protagonist,which works in a field in which her appearance matters and she might smile on people no matter what and not-so-attractive male protagonist who is a bit older than her and makes her appreciate herself and smile for real.

After a young female gets drunk by chance..she sleeps with the rich family's only son and that leads to accidental pregnancy.
After the fact is known by the soon-to-be-father... The future parents are forced to get married and get into a contract marriage.

An accidental pregnancy between an innocent girl and the only son of the rich family leads towards a contact marriage for the sake of tha baby.

A male CEO who hates lie and liers falls in love with a miserable poor woman who lies in order to survive.