Bruce never thought he would see the day that he had the Other Guy under control enough to willingly put himself in a situation like being a college professor, but ever since the events in Sokovia, when the Hulk made the decision to go dark and leave the rest of the team, including Natasha, behind, his control had been impeccable. Naturally, he hadn't been able to hide very long. Tony Stark had more resources than the combined effort of multiple governments, but the others understood why he needed to leave and make it on his own.
After spending time overseas, he eventually made his way back to California and ended up teaching Physics at Stanford. It was an interesting position and he found that dealing with a number of his students was an exercise in patience and control like no other he ever experienced.
There was one though, who showed great promise, and when he dismissed his class for the day, he coughed lightly. "Ms. Martin, do you have a moment?"