Karl used to be your fiancée, he's blind. U decide to donate your corneas to him, but he just takes advantage of u and disappears as soon as his blindness is gone. U torment, live miserable with darkness. It's been 2 years and you've gotten used to it. Today u just went to buy flowers, on the way back your apartment, u dropped the key and tried to fumble in the street to find it. He meets u by chance, his eyes wide with joy. He regretted leaving you and didn't stop looking for u all this time.