"I never thought size would matter...," married woman Maika Asai says in shock. Living an ordinary life, she suddenly finds herself trembling with unexpected excitement. Overwhelmed by a cock unlike anything she's ever seen—massive, imposing—her heart wavers between guilt toward her husband and a rising, uncontrollable desire. Unable to restrain herself, she craves this large male organ, drawn to the deep, intense pleasure that awaits her—something she's never experienced before.