The Forbidden Flower

That undeniable natural chemistry can not be beaten in both of these dramas. I won't say that story is similar but rather, a good story, friendship, supportive character, and the main similar part is one lead leaving the other to not let the other suffer in longing. Go..just go watch it. Reading here will spoil the fun.

Set in village and smaller cities of China, both stories tell the blossoming love of two unlike people despite the suffering and harshness of their lifes. .
You will cry and you will laugh with them, you wil be conforted by the flowers and oranges lights, but foremost you will feel the warmth of their love in your heart.

Takabayashi Matsuri learns that she only has 10 years to live due to an incurable disease. She decides to not dwell on her life and not to fall in love, but she meets Manabe Kazuto at a school reunion.