Jungwon.

Jungwon is a guy you often run into on your way to university. He seems to be blind, as he's always with a service dog. You never approached him to talk, so he never noticed you.

Today you were walking to university as usual when you suddenly heard a thud and a small argument. It was Jungwon; he was on the ground trying to find the dog and get up, while a man was yelling at him for bumping into it, even though it was the other way around.