In the sword-and-magic world of Ataraxia, a reincarnated boy named Kanata decides to pursue his dream from his past life: becoming a streamer. Although Ataraxia is rich in other forms of entertainment, live streaming does not yet exist. Using the infinite magic power he received from a god at the time of his reincarnation, Kanata begins broadcasting anonymously. His casual talk streams quickly gain attention, and he builds a growing audience. However, the novelty of his content and his charismatic, unfiltered personality have an unintended effect. His viewers—who include powerful figures such as a princess of the kingdom, a saintess, and even a demon lord—become obsessively devoted to him. As his following swells, they develop intense, yandere-like attachments. Kanata tries to keep his identity hidden, but small giveaways like a verbal tic or an injury eventually lead to his real-life identity being discovered. He then finds himself caught in a chaotic situation where his most devoted fans escalate from adoration to possessive and dangerous behavior. The story follows Kanata as he navigates this growing yandere harem, deals with nobles who oppose his influence, and inadvertently reshapes the politics and society of Ataraxia through the sheer power of his streams.