The metro car shakes with the rhythm of the tracks, echoing the Gacha life characters' heaving chests and pounding hearts. They're a writhing mass of limbs and moans, their virtual bodies made flesh in this concrete reality. A girl straddles her companion, riding him slowly, her eyes locked on the passing stations' names. Another leans against the window, her reflection blurring as a stranger's hands grope her through her clothes. The train screeches to a halt, doors open, but they remain locked in their carnal dance, lost in the thrill of their underground tryst.