If the drama is as much based on the novel, the ending of the ml and fl of Scarlet Heart and Red Sleeves are same. Regardless of the time travel in SH:R, the story flow of political reasons coming in between lover and separation are same.

Change of "fate" due to "kiss" .
Cute height difference.
Arrogant ML x FL who lacks something? Luck or taste?
Their path crosses unexpectedly.
Eventually falls in love.
But their is always drama of a past lover :/

1. Starts from school and ends in adulthood.
2.No "annoying" rival drama even though there were rivals.
3.Long distant relationship(or breakup) for a certain period.
4.Helpful friends thought out life.
5. Side characters had their meaningful endings too.

1. Older female, younger male relationship
2.Family protest.
3.Broke up and reunion.
4. Awsome soundtracts
5. He gives her confidence

focuses on friendship...school life..future plans..smart boy n partially weak girl~
love blooms slowly but strongly..
girl falls first but boy falls head over heels :v
falls apart :'(
but has the potential of reuniting...

girl falls first.. clumsy,childish ,baka shoujo type XD
boy totally utterly n cold heartedly rejects :v
then starts to notice..gradually falls..
:'( strong second lead syndrome..
1st lead childish jealousy..
and they live happily ever after..

Both about time travel, school friendship, past regrets and another chance to get back what they lost..
"to make the perfect choices that will alter what seems to be fate?"- Orange

" to learn how to face himself honestly and learn how to love? Cherish the precious things in youth?"-Love, Timeless

“Maybe it's impossible to live life without any regrets. Even when you know the future... you'll still mess up."- Orange

"what if you are younger by 10 years, what would you want to change?" -Love, Timeless