Part two of Kengan Ashura Season 2.

The Joker and his best girl, Harley Quinn, are tearing through the streets of Gotham with sacks full of cash and the law in hot pursuit. Unfortunately for them, though the jester manages to escape, the night ends with Harley being captured by a mysterious, katana-wielding woman. Meanwhile, Amanda Waller, the head of the government security organization A.R.G.U.S., has commandeered a team of supervillains for a ruthless mission into another world. After losing contact with the first suicide squad sent through the portal, Amanda sends Deadshot, Peacemaker, Clayface, King Shark, and Harley as replacements. However, shortly after entering the portal, their helicopter crashes in the middle of a battle between horse-mounted troops and vicious orcs. With all of the accompanying A.R.G.U.S. members dead on impact, the villains break free of their shackles and rampage through the army of orcs, unwittingly aiding the human soldiers—only to be rewarded with imprisonment. Now bound by magic-infused shackles, Harley and company must hurry back to the portal they came from, or else the bombs A.R.G.U.S. implanted in their necks will detonate.

Shin Hazama has shut his heart ever since the mysterious and sudden death of his mother during his childhood. With his scientist father occupied with research, he can only rely on his childhood friend, Kotori Izumi, the popular and good-natured daughter of his father's employer. At the end of their third year of high school with graduation right around the corner, Shin and Kotori finally begin to move forward together, both in life and in love. Everything falls apart again when Shin's father also suddenly dies. But before things can settle down, he and Kotori learn the secret behind his parents' sudden deaths when they encounter agents from a high-tech dystopian Japan existing in a parallel universe. Among them is Jin, Shin's relative self, who is working against the humanoid weapons Miko and Niko. As the lives of relative selves are linked, Jin has two objectives: defend the vulnerable Shin to protect both their lives, and assassinate Kotori to end the ironclad rule of her relative self, Princess Kotoko—his mortal enemy and the killer of his parents. Confronted with this new reality, Shin and Kotori must honestly face their feelings for each other, even if the world as they know it will end tomorrow.

Three months have passed since the Demon King was defeated by a hero. Mankind rejoices over their victory, but dwellers of the demon world do not share the same sentiment. With the loss of their king, they must now hold a tournament to decide who will become his successor. Monitoring the competition is the hot-headed yet powerful Vamirio—one of the Four Heavenly Kings. Among all the participants, she is extremely distrustful of one: Helck, a human hero who claims to hate humanity. As much as she wants to get rid of him, it is impossible due to Helck's incredible strength and popularity. Amidst the competition, Vamirio discovers that humans have vanished from various towns. As a result of this puzzling turn of events, Vamirio grows desperate to reveal Helck's true intentions by carefully crafting a plan to make Helck lose. If she proves to be successful, she might uncover where his loyalty truly lies before the demon world is endangered.