Sero and Todoroki became roommates after graduating together. Even thought he could buy his own house and didn't was a bit werid but considering Endeavor kinda sucks so no one can really blame him.

Todoroki just came back from fighting a villian and instead of relaxing he started to cook a meal. It was quite the only thing plating was the news on low as it describes the rest of the scene of what happened end earlier.