so listen how about this headcanon I got that Serizawa has read a billion stories because did you even see that bookshelf in his room and it was the only way for him to explore the world and Reigen picks up on this so to get Seri more confident at talking to strangers and out loud in general he gets Seri to come over to his place and read him stories and Reigen hasn’t had time to read in years so he ends up getting really into them and then it’s just like
a thing they do
so anyway