[fun aquarium (Umino Ryo)] Boku wa Kanojo no Inu ni naru ~jimikei kanojo ni aisarete to sarete shiborareru~

Asahi-kun arrives expecting to use his plain older girlfriend for casual sex, only to find he has walked straight into her loving trap to make him her devoted pet. The big-breasted, softly smiling girlfriend takes complete control with collar and leash in hand, denying blowjobs, teasing with slick sumata and thigh grinding, and demanding he bark and obey while she questions if he can truly satisfy her. Flustered, leaking and already on the edge, he surrenders to woofing on command, desperate to be a good dog and terrified of being thrown away if he cannot endure her relentless, affectionate milking.