@CatCAT48 Okay, I don't know if this is a good idea or not but: Maybe in the story (it seems like Todoroki knows its Katsuki) so they have a conversation about it and Katsuki finds out Todoroki know's after Todoroki tells him. And while Katsuki and Todoroki were talking (for awhile) maybe in a chapter Izuku figures out it's Katsuki but he doesn't say anything until he walks into a room where Katsuki and Todoroki are fighting. And Izuku would reveal that he knew it was Katsuki after figuring it out on his own. Todoroki and Katsuki would be shocked and Izuku would be upset and... (I don't know what else to put) lmao