Fourth-year college student Hana is introduced to her senior Ayami through the career placement office, learning that Ayami works at a bank called Bian Bai. As a female college student deciding her future, Hana aspires to join a bank and is especially excited to meet Ayami, who works at her top-choice financial institution. Today, she visits Ayami's home for a career consultation. Sitting on the sofa, Hana gradually loses her composure as Ayami takes control, guiding her into overwhelming sensations—feeling as though her hidden depths are being penetrated, swept away by wave after wave of intense pleasure. Her body is rapidly awakened and fully opened. Later, in the car, the roles reverse as Hana, now driven by newfound desire, takes the dominant role. Unable to contain the pleasure she's discovered, Hana gives in completely. Ayami, surprised by this unexpected turn of events, can't hide her astonishment.