After summoning Rias to Kyoto, Issei uses Rias' nipples as a switch to unleash his full potential and transports her back home. Elsha and Belzard - the strongest male host of the Red Dragon Emperor - inform Issei that they are leaving for good, but give him some words of encouragement before doing so. Issei uses his new power, named Illegal Move Triaina, to attack Cao Cao, who barely manages to defend with his spear...