User blog comment:Wittlewhitewhispers/Why Dabi is a Todoroki/@comment-25044056-20191229151655

If indeed it was the plan for Dabi to be the lost Todoroki brother I hope Horikoshi follow through with it. George RR Martin has a great quote about this sort of thing.

" Before the Internet, one reader could guess the ending you wanna do for your novel, but the other 10.000 wouldn’t know anything and they would be surprised. However, now, those 10.000 people use the Internet and read the right theories. They say: “Oh God, the butler did it!”, to use an example of a mystery novel. Then, you think: “I have to change the ending! The maiden would be the criminal!” To my mind that way is a disaster because if you are doing well you work, the books are full of clues that point to the butler doing it and help you to figure up the butler did it, but if you change the ending to point the maiden, the clues make no sense anymore; they are wrong or are lies, and I am not a liar."