It Started with a Kiss (2005)

They both have Joe Cheng as a lead.

Miyu and Shuya are high school students. They have dated for 2 years. Miyu and Shuya have a promise that no matter what, they will watch a movie together on the first day of each new month. When Miyu and Shuya are on their way to the movie theater, Shuya suddenly cancels their date. Shuya seems like he is hiding something and he acts nervous. Later, Miyu goes to the place where she is supposed to meet Shuya, but she witnesses Shuya getting into a car accident. She panics, but when she wakes up she finds herself on the morning of the accident. Miyu keeps waking up on the day when Shuya got into an accident.

it has very sweet romantic moments but also some sad moments. The man is very cool towards the girl. The girl Mi Young is very clumsy and not smart nor beautiful. But she falls in love with the CEO Lee Gun. In the beginning she has to marry this man because of an accident she becomes pregnant of him. It's also very funny. The series gives a similar feeling as It Started with a Kiss.

If you're looking for a different story with a similar feeling and great chemistry between the actor and actress. Then go for this Korean Drama!!!

Both dramas have an arrogant and rich boy and a poor girl whose is not smart nor beautiful. The difference is that the main characters hate each other in the beginning. Later their hate changes into love for each other. It's very sweet and it's the feeling of someone's first love. Although there are not so many romantic moments. It's still one of the best old Korean dramas with two very good actors. They both share a great chemistry.

If you're in for great chemistry and a cute couple then go for this one!!!

I recommend pretty much all adaptations of Itazura na kiss. The personalities of the leads and some elements of the plot are very similar.

Academically disinclined girl crushes on guy genius and eventually even chooses a career to be closer to him.
Very similar vibes and light hearted romance.

It is original Taiwan version of "a love so beautiful" with same drama outline and plots.
Male lead with super high IQ and handsome tall look
Female lead with low IQ and cute shorty look and chases the ML since beginning of drama
Second ML with athletic skill and so prominent one sided love to FL
FL has lovely and funny classmates
Both ML and FL are childhood friends and vaguely care each other in many ways

The only difference is ML in TW version has a rich family background while ML in Chinese and Korean version has broken family background..

They both have Joe Cheng as the main lead.

Both of his characters are a little bit similar, but he is good at it.

Both are in cohabitation dramas and a rom-com.

After an earthquake destroys Xiang Qin's house, she and her father move in with the family of her father's college buddy. To her surprise, her new kind and amicable aunt and uncle are the parents of her cold and distant schoolmate, Jiang Zhi Shu, a genius with an IQ of 200 whom not too long ago rejected her after she confessed her feelings for him. Will the close proximity give her a second chance to win Zhi Shu's heart? Or will her love for him end under his cold words?

The original Taiwanese version filmed a decade ago with Joe Cheng and Ariel Lin as the leads

Both have great romance between an arrogant handsome rich guy and poor girl. Both have funny moments and times that make you angry or cry. The sequel They Kiss Once Again is also awesome and addictive.

Females leads have trouble studying but tries their best to rank well. They're both very energetic, doesn't care what others think of them.

Males leads are very smart and tutors the female lead. They are popular among the peers and teachers because of how intelligent they are.

The Mom's in these are very similar. Both seem way to excited about getting their son together with a girl that most rich drama mom's would be trying to pay to stay away. Has some similarly corny characters and overacting. Her childhood friend, who is always around to have her back, is very similar to the second lead. there is also kind of a class A class B rivalry. The only real difference is that the leading lady, in Master Devil Do Not Kiss Me, is not head over heels for the leading man. It also appears to me that he likes her first..
Both are fluffy, fun, and adorable.
Note: I watched Master Devil Do Not Kiss Me, right here on MyDramaList !!!

The OTPs are living under one roof they come to understand & fall for each other

Similar concepts of living together with genius male lead and carefree female lead. Both slice of life dramas set in school, with sweet romance. It Started With a Kiss is the classic retelling of manga Mischievous Kiss and has a similar story to Attention Love regarding the relationship between the two leads. If you enjoy Attention Love you will definitely enjoy It Started With a Kiss and it's sequel They Kiss Again.