[Kosuko Teikoku (sella)] One day, making any erect futanari cum became common sense! [Kubozuka]

Overnight, society rewrote its rules: any futanari with an erection gets relieved by whoever is nearby, and nobody blinks. Schoolgirl Futaba navigates this new common sense as strangers on the train offer themselves up, classmates compete to swallow her load, and her possessive childhood friend Rin demands her belly end the day full of Rin's cum instead of anyone else's. Between endless deepthroat sessions, mating presses, and cumflation that leaves her stomach visibly swollen, Futaba discovers the real challenge is deciding who gets to fill her up in return.