In the manga Black god, do Kuro and Keita fall in love?
Kuro has a crush on Keita, proving so in Episode 22, though she never confessed how she felt to Keita . in Black God referred to Anime Version .

This and read this maybe you could find the answer , it has the discussion.(Anime)

In Anime : 
No, they do not fall in love . 
In Manga :
They do.