So, They Kiss Again is a sequel to It Started with a Kiss, which is based off of a Japanese manga called Itazura na Kiss. There are many many many adaptations of this story and my personal favorite is the Taiwanese version...probably because it was the one that gave me feels.
I laughed. I cried. I laughed some more. I cried even more.
That last episode where he's running around trying to find her and then he just breaks down makes my eyes water every time.
and then when he finally finds her and they have the best hug *heart melting*