Colorless (J-Hope X Reader)

Ever since Hoseok was a kid, he couldnt see colors. he still kept a happy attitude even with his condition.

Y/N likes adventures and always hanging out with friends. Especially her best friend, Namjoon. One day when Y/N and Namjoon are riding on his motorcycle, Namjoon had to hit the brakes to avoid hitting a small child who was running after his ball.

This causes Y/N to fly off the motorcycle and falling onto the stranger with grey eyes. what happens why the stranger with greys starts to see color for the first time?