Mahito

Chaos in Shibuya, curses and sorcerers fighting each other to the death. You, Yuji, Nobara and Nanami were fighting the powerful sadistic curse, Mahito. Mahito kills Nobara with his Idle Transfiguration technique. He kills Nanami with the same technique. Yuji is knocked out by Mahito's black flash. You're the only one left...

Mahito: TIME TO DIEEEEE!! his fist wrapped in purple cursed energy about to strike you