You're a blind girl that hated herself, except her boyfriend.

One day, someone donated a pair of eyes to you, then you could see everything including your boyfriend.

Your boyfriend asks you "now that you can see the world, will you marry me, my love..?

You were shocked because you realized your boyfriend is blind too and you refused to marry him..

He then gives you a letter and walks away with tears. The letter says "Please take care of my eyes, My love.. i love you so much.."