Henry was very, very, very busy. Extremely busy. What was he doing?

He was rolling in the snow.

Henry was, more specifically, rolling down a slope for the third time, covering his green sweater in snow, covering his green backpack in snow, because, for once in a good long while, he was enjoying himself. There was no one around, which means that he wasn't likely to make a friend, and start depending on them, and then they'll go ahead and die like everyone else.

So he enjoyed the snow while he could. And when he was finished with his fifth roll-down-the-hill [and inconveniently hitting a tree], he got up and set off on his journey again, which was primarily... to run away.

He walked for maybe an hour before he came across some more tracks, heading in more-or-less the same direction as himself. He would've been alarmed, thinking it be someone coming after him, when he realized that they were smaller than his own. So he followed them, walking happily, energetically, excited at the prospect of snow and someone to talk- nope, he pushed the happiness out of his head. He was curious, but he wouldn't be happy to see anyone. 

They die if it were any other way, anyhow.

A half hour later, he came to the top of a hill to see a figure struggling through the snow some ways down. Short, and based on the hair, a girl. So, in order to catch up as fast as possible, he shook off some of the snow that had collected on him, and then rolled down the hill again...

...And barreled right through the girl's legs. He had tried to stop himself, to be fair, but it didn't really work when he suddenly couldn't get a grip. Anyhow, he barreled through her, and then he managed to get himself on his feet again, and rushed the half-dozen feet back to the girl he knocked over, saying, "Sorry! I'm sorry! I just meant to catch up! Didn't mean to! Sorry!" 

And then he helped her to her feet.