In`yoku Tokkyuu Zetsurin Ou  

Hentai Express: Lust Train, The Limited Express Train Of Lust - Matchless King, 淫欲特急ゼツリンオー, Hentai Express, Inyoku Tokkyu Zetu-Rinoh

The Oraga Stone serves as the power source for activating cyborgs, requiring a combination of training to fight for either good or evil purposes. Energy supply to the stone can only be obtained through female sexual stimulation and orgasm. The M-77 Express was stolen by a traitorous professor with malevolent intentions. To stop him, the Sex Desire Express Zetsurinou must be employed.