This is because mangaka Kouhei Horikoshi will be holding a special Q&A session on twitter.
And because this is the internet, which means a few trolls might include a few troll questions, Horikoshi will be selecting the questions he will answer.
This is all to promote the upcoming My Hero Academia THE MOVIE: Futari no Hero film.
My Hero Academia is currently one of the hottest manga and anime titles today.