Recommendations

Both are touching but beautiful stories and both makes you cry a river over them. Both includes school romance, but as you can see in 1 litre of Tears they are not the fun kind of romance. And both dramas includes "deadly diseases". Kou Kou Kyoushi is also a masterpiece. Don't think too much and just watch it.

Both are touching but beautiful love stories and both makes you cry a river over them. Both are school romance, but as you can see in Koizora they are not the fun kind of romance, they include "heavy romance". Kou Kou Kyoushi was even heavier. In my opinion, Kou Kou Kyoushi was unforgettable and better than Koizora. So you should see it before you die.

The similarities between these dramas are strong male characters and fun female characters. Both shows are romantic and have loads of heart fluttering moments,

They're different (both the plots and the leads' relationship status) but, at the same time, I've found them similar (especially at SL's beginning; while watching I often thought about Hirugao).
Differences: the ending and the mood (they're both realistic but SL is lighter whereas Hirugao is more emotional, maybe because the latter is longer).

Both are about men who try and avenge their brothers by bring down the woman who they believe caused all the heartache. Both very dark romances.

It's the same plot as in "You're Beautiful (K-drama)", but in Taiwanese. Both have the same set up where a twin girl had to dress up as a boy to substitute for her brother.

Marriage at the begining, crossdressing, similar clever heroine and similar feeling of these shows, but the end of PC is realy funny.

Both dramas Koike Teppei acts and has a supernatural ability.
+There's also bromance in both of them <3

They have the same kind of feeling.
+Both have cops in them..

The drama Hyde, Jekyll, Me is sort of similar to both Kill Me, Heal Me and this drama, Oh My Ghostess! It involves around bipolar and Dissociative Identity Disorder (DID).

Same storyline. A strong headed work addict gets a nice man to be their helper. The man already has a girlfriend and ex's make the situation more difficult. Eventually they fall in love.

In both series the women have to understand what it means to care for "your" family, and they change their characters ; both contain hilarious scenes.

This was the original that Operation Proposal is based off. Best friends falling in love but getting fooooorever to act on their feelings

In both dramas, the mother abandoned her daughter and prefer the child they brought up to her biological daughter. Both female leads decided to take revenge on their mothers. Romance involved.

Both 'Kiss Me' and 'It Started with a Kiss' are versions of the Japanese manga 'Itazura Na Kiss'. 'Kiss Me' is Thai and 'It Started with a Kiss' is Taiwanese.