Villain Todoroki x Reader: Heart of Darkness

(This book is a sequel to my first Todoroki x Reader, "Light to Darkness". I strongly recommend that you read Light to Darkness before reading this story, Thank You!)
And so the new Era begins. With powerful driving forces behind the League's operations. Even with All For One's capture the League hasn't been hindered in the slightest, instead forming a plan to not only bust him out, but also to take out some of the top heroes in the world. The new number one and two, Endeavor and Shadow. All while achieving revenge at the same time. Villains are rising and heroes are falling. Darkness shall rise to bring forth the light of a new Era. And in the very center of it all is the Fallen Hero Joker, aka (Y/N). Living in the center of it all, in the Heart of Darkness.