Um

The timeskip kinda left some stuff out, but basically, there's a new villain group that's been hiding in the shadows of a tech company. I believe their belief was that people should have the right to use their quirks whenever they want (though I could totally be wrong, someone correct me if I am). The tech company recently announced they were going to expand into the business of hero support items, which they are distributing illegally to experiement for their villainy stuff. They found the guy who's been helping the League of Villains (that guy who introduced Shigaraki's crew to him) and were trying to get him to turn against the League, but he wouldn't. Flashback a month ago, someone (presumably the new villains) found the League and kicked their asses.