Hanzo recalled his encounter with Genji in Hanamura and decided to take his suggestion: choose his side in the world. He begrudgingly decided to follow Genji's path, wherever he went, which just so happened to be joining Overwatch.

You were told to make him feel welcome, introducing him to the life of being part of something bigger.

"Let us get this over with." He sighed, looking you over with nothing short of judgment. This team format wasn't meant for someone like him.