One day, Tatsumi, a lonely underworld worker, comes across the murder scene of his ex-girlfriend Kyoko. Tatsumi escapes with Kyoko's younger sister, Aoi, who was with her. On the other hand, Aoi, who has lost her beloved family and vows revenge, pursues the murderer of Kyoko. Tatsumi, who is at loggerheads with the impudent Aoi, decides to accompany her on her journey for revenge, and as he cooperates with her, a certain feeling begins to develop.
"Kiss me at dead of night" A story about a man and a woman who cause an irreversible situation at a family restaurant in the middle of the night. "Imitation Yakuza" A tale of an unknown actor who, while attempting to audition for a Yakuza movie, mistakenly enters a real yakuza office, finding himself in deep trouble. "In our own little world" A black comedy set against the backdrop of two irreconcilable classes: a romance workshop and a self-defense workshop. These are short stories about men and women who find themselves caught up in desperate, life-changing adventures.
A camping trip will turn into a nightmare for sisters Akane and Kozue when they become trapped by five men who abuse and torture them. Kozue is brutally murdered but her sister manages to escape. Now, with the help of Misaki, a mysterious female vigilante, Akane is ready for her vengeance. And nothing will stop her until her sister's murderers pay for their crime!
The Underground Empire Badan makes its move, intending to invert the world. Kouta and Mai are pulled through one of these inversions where the discover a boy named Shu, who also holds the power to invert the world. As the Riders fight to protect Shu, Fifteen appears again, seeking Shu. As Kouta flees, past Riders gather and fight one another, split between the Showa and Heisei era Riders. But, the truth of Badan is not as it seems…