Long ago, Demon Lord Veltol was defeated in battle by the Hero, but thanks to his reincarnation magic, he has returned after 500 years. Veltol is keen to resume his world domination once more, but his vassal, Machina—one of the Six Dark Peers—reveals an unexpected truth.

Following the advice of Machina's friend, Takahashi, Veltol begins streaming games with a face reveal. He spends his days establishing his image as a streamer, using Takahashi's strategy and influence. Meanwhile, Veltol goes for a stroll through the back alleys of Shinjuku's outskirts one day, and Veltol is intrigued by the sight of a particular vagabond.