Kyokugen Chikan Tokuiten 3 is a hentai anime based on the Astronauts: Sirius video game, to be released in October 2024. The story takes place on a crowded train, where the protagonist, Kiichi Kusakabe, silently observes women with provocative attitudes. Rimika Hosho, a popular streamer who performs erotic content, expresses her contempt for sex maniacs during a live broadcast, but ends up crossing paths with Kusakabe. In parallel, Iori Fudo, a college student skeptical about chikan, becomes a victim of one, although she is saved by Kusakabe, who also has a complex history with sexual abuse.
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