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contract marriage ( feelings developed after marriage in perfect and casual )
In love in time the guy had feelings for the FL before contract .
2 .In perfect and casual the contract was because of ml grandpa
And in love in time the contract was because of FL dad

Reserved smart ML
Strong FLs with cute personalities
storyline follows the leads during their school days
cute side stories

The similarities lie in --- Takes place in high school
Popular male lead
Female lead dresss as a guy

Both MLs need the FML's kiss to give them the ability of taste.
Both ML's are in the industry of taste. FIY is a wine taster while KLT's ML is a chef.
Both go from a contractual relationship to a real one.
Both have a cohabitation relationship.

Surrounding the plagues of marriage, adultery, and guilt. Cheat On Me, If You Can is what seems to be a lighter version of The World of The Married

While the other one is concentrated on sports and other on arts, they share a similar feeling with the story. Sweet story about a campus life and hate to love relationship.

Both of them are action/thriller dramas with a bit of romance, and both of the plots revolve around a mystery about a military incident, corrupted politicians hiding the truth and secret parent identities.

Both shows are very quick-paced stories about power struggle.
Both have the same Chinese setting: a young scholar arrives to the capital, two princes are trying to get him to their side, each fighting for power. There are also a vile emperor who had came to power by force many years ago with the help of his friends; the local special service and its insidious head, one of those very friends; empress-grandmother, keeper of family secrets; emperor's sister with an illegitimate child...
All these characters have complicated relationship in both shows . But the MLs differ absolutely. JoL is not so serious as NiF, it is full of humour and the ML of JoL is not supersmart. (Moreover, he is sometimes saved by others. )
In JoL we also still don't know what girl the ML is going to prefer so we are waiting for the 2ns season.

Both drama are about a man who truly loved himself, didn't think they fit for marriage & also self-centred.

Both shows have reincarnation theme. In chicago typewriter ml and fl were reincarnated and in tale of the nine tailed fl was reincarnated. In ct as well as in totnt characters get to discover what happened during their past life.

FL time travel to change the events or prevent events to occur with limited life span.

more/less the show have similar premise, the difference is that BG features an ex-SP and a bit darker than SP.

Has a similar fleeting quality to it.

Both are master pieces in their own way. Fantasy is something we crave for and can't have in reality. This is exactly what these dramas offer us. Both of them are revolutionary love stories. A love story where a lover can sacrifice everything but love till the end.

Both are Time Travel and Romantic Comedy...If you like One of it then you might like the other one...