Is it a dream or reality?! When I signed up for a service that uses AI analysis to send out a "little sister" that matches the subscriber's wishes, it turned out to be Rin chan, a cafe employee! She fully approves of her big brother Hinata's actions and seduces him with a blowjob even though she's in the middle of work! When her colleague Suzuki delivers a package, Rin-chan, who forgot her glasses, mistakes him for her big brother Hinata and serves him with all her might! Rin-chan is heartbroken when she puts on her glasses and realizes her mistake, and her big brother Hinata has a lovey-dovey sex session!