A unique project called "Darts Nanpa in Tokyo," where Tokyo's 23 wards are randomly chosen by dart throw. This time, the crew heads to Shinagawa, a well-known business district. Walking along the riverbank, they spot a stunning, modest beauty under a sun umbrella, wearing a cute pink frilly outfit. Her name is Kanna, a student at a nearby women's university. She was peering into the river to observe fish—her true passion. In fact, she’s so knowledgeable about fish that she even majors in it at university. She introduces them to an aquarium, and they spend time together learning about marine life. Afterward, they head to a hotel and toast with champagne. Kanna prepared sushi, and she happily munches on a piece, saying, "Delicious!" with a bright smile. During dinner, she opens up about her personal life—she's been so focused on her studies that romance has taken a backseat, and her last relationship ended partly due to that. She also admits her sex life was dull, like a passive "tuna," prompting a "reconstruction session" under the guise of improvement. Though hesitant at first, Kanna gradually surrenders, relaxing under passionate tongue kisses and breast fondling. She timidly touches her own pussy, writhing in unfamiliar pleasure with her once-lifeless body now fully awakened. Intense stimulation from a vibrator and an extra-thick dildo sends her body jerking like a live fish. Then, standing doggystyle, the cock slides into her with a slick "nyupuri," and she gasps widely, moaning loudly as pleasure overwhelms her. She experiences her first creampie-style creampie, and as her tight, warm pussy grips harder, he can't hold back—switching to cowgirl position for a deep creampie. Not satisfied, they immediately go for round two on the bed. Kanna takes full control, riding hard and grinding her hips with wild abandon. Repeated orgasms hit her as relentless thrusting drives her deeper into ecstasy. Screaming like a wild animal, she receives a second generous creampie. Completely satisfied, she says, "That was insane..."—her "tuna" days behind her, now savoring the rich, raw pleasure of premium tuna sex.