Very short
As the League of villains went the vortex they end up at an abandoned manor where. In front of them was a man wearing a tattered up hero's costume. The costume looks like knights armor that once silver was sprayed painted back, missing chunks, like a right shoulder pad and a left gauntlet. The only thing that was under the armour where jean pants, black boot completed the look. He look like a drunk and smiled like one too. In all to Tomura Shigaraki he remains him of a NPC in gaming.
"Been expecting you Tomura, All For One sent me a message saying your ready." The man said as he watch Tomura look at where the once portal was. Tomura look up at him angry at him for Speaking in such a way to his teacher. "Who the hell are you." Tomura said with so much venom. "I'm the villain that killed the elite of the elite, world class heroes. Hero turn Villain." He said opening a pocket portrayal drawing a sword aming it at Tomura neck. "Excalibur" he said as all eyes where on him. "Now my KING let's build you an army shall we." Excalibur said taking the sword away. Walking away from the league of villains.