Tutor for Girlfriend's Sister: Forbidden Romance & Big Tits

Narita’s first visit to his girlfriend’s home introduces him to Hiyori—the stunning younger sister who instantly steals his attention. Hiyori possesses a flawless combination of captivating personality and breathtaking looks; her magnificent G-cup bustline and perfect figure surpass even Narita's own girlfriend. Since Narita has experience as a tutor himself (or rather *a* tutor), his girlfriend requests that he take on the role of Hiyori’s private instructor. Sharing a room with this gorgeous girl sends Narita into an almost uncontrollable state of obsession. Driven by instinctual desire while studying together in the same space, Narita begins unconsciously kneading Hiyori's enormous breasts. He braces himself for an immediate outburst of anger or protest from her side—but instead of resistance, Hiyori offers silent permission! Though she verbally insists he shouldn't touch them, she does nothing to stop him from thoroughly squeezing and worshipping her ample cleavage. With all reservations dissolved, Narita decisively crosses the boundary, claiming possession of his beautiful girlfriend's sister. The dynamic quickly escalates beyond simple tutoring sessions. Hiyori becomes increasingly bold, actively initiating sexual advances toward Narita. She openly begs for sex with her older sister's boyfriend, even when her sister is nearby! This forbidden romance promises intense intimacy and thrilling domestic tension as Narita succumbs to the irresistible allure of the younger sibling.