The series follows the exploits of Erika Sakurai, a seemingly pristine honors student who harbors an insatiable, nymphomaniacal lust. She is in a relationship with a male protagonist who is initially hesitant to fully engage with her, finding perverse pleasure in watching her get relentlessly fucked by other men. The first episode establishes this dynamic, showcasing Erika's boundless promiscuity as she enthusiastically takes on multiple partners, her body used as a public playground for raw, anonymous fucking. She craves the feeling of being filled and bred, offering her wet, eager holes to anyone willing to pound them. The series arc culminates in the second episode where her main partner finally succumbs, fucking her himself. However, their consummation is just another conquest for Erika. Immediately after, she continues her spree with random men before abruptly disappearing. She concludes her story by sending her now-cuckolded partner a letter, cheerfully informing him that she has embarked on a glorious sexual journey to taste countless dicks across the land, cementing her identity as a true cum-dumpster who belongs to everyone and no one.