Midoriya is frequently seeing or feeling former users of One for All since season 1 of the anime when he was able to break Hitoshi mind control. Now in season 5 the first owner is telling Midoriya he can't show him more of his past because he only can handle 20% of One for All. What are these feelings/ images supposedly?
Do other users of One for All live inside Midoriya somehow or are they just memories?