In`yoku Tokkyuu Zetsurin Ou Episode 1 introduces viewers to a unique blend of mecha action and adult themes. The narrative centers around the Oraga Stone, a mystical energy source that powers cyborgs through sexual stimulation of women. When the M-77 Express train is hijacked by a rogue professor with nefarious intentions, the only hope to thwart his plans lies with the Sex Desire Express Zetsurinou. This episode combines elements of science fiction and erotica, presenting a storyline where intimate acts are directly linked to the activation and empowerment of mechanical beings. The animation showcases imaginative mecha designs and explicit scenes, catering to an audience seeking unconventional adult content. Despite its provocative premise, the episode has been critiqued for its abrupt conclusion, leaving the storyline unresolved.