A recent comment from My Hero Academia author, Kohei Horekoshi is worrying fans that the manga story is being rushed. According to Horekoshi, because of readers not liking the introduction of villains so much, he had to quickly move on from the forest training camp arc.
Horikoshi commented during the Ultra Stage – Symbol of peace stage play: “Up until the summer training camp, the series had a pretty steady amount of popularity, but the moment that I hinted that there were villains coming, crash! The popularity suddenly dropped. Sorry for talking about this. But I guess people didn’t want them there”.
He further said: “I already had the story planned and I couldn’t have villains leave without doing anything. I decided to cut short some of the things that I was planning to do during the summer camp, and hurried the next battle.”
It seems like Japanese fans don’t like the villains that much. There are many reasons behind why villains are hated so much in Japan, and one of the main reasons is the culture. In Japan, you either fit in with the rest of the society or you became an outcast. An outcast is not supposed to become something important. That is why giving character development to villains was not liked by the Japanese fans.
As the popularity of the series started declining due to the introduction of villains, Horekoshi must have been pressured to rush that part and move on to the next arc.
Crunchyroll describes the My Hero Academia anime as follows:
Izuku has dreamt of being a hero all his life—a lofty goal for anyone, but especially challenging for a kid with no superpowers. That’s right, in a world where eighty percent of the population has some kind of super-powered “quirk,” Izuku was unlucky enough to be born completely normal. But that’s not enough to stop him from enrolling in one of the world’s most prestigious hero academies