She meets KKJ on the bus. And he repeats their very first scene and she (like recalls) follows the advice he gave to fall him in love again. What we see is KKJ and not his brother. Perhaps because he grew up and became like him, perhaps because after all the drama was right to end it to him, perhaps because the age difference (although I do not think because now he has turned 20 years old). In any case Gil by Ran and KKJ are together again :) sorry for my english
I hope in a special because the final is disappointing