I was watching the movie and in the final battle against Nine, all looks lost for Deku and Bakugo until Deku offers to give One For All to Bakugo. Everything works out and they defeat Nine. When All Might is holding Deku in his arms after the battle, Deku lets All Might know that he gave Bakugo One For All. After that Deku passes out his Full Cowling stripes (I couldn't think of a better word to describe them) show up. All Might is relieved by this. He says (and this isn't a quote) that he (Midoriya) didn't fully transfer One for All to Bakugo. I was wondering why this was and how it's going to affect the plot of the story.
(I assumed at firsts it was for plot armor but I am starting to second guess it. They would have made Deku go "Super Saiyan" and beat Nine by himself.)