Momose couldn't believe her luck when her crush Yoshida confessed to her and they started dating right away. Despite the mutual feelings and shared interests, her new boyfriend is somewhat lacking downstairs and she can't help but feel unsatisfied after their first time having sex, even if it makes her feel a little guilty. When their teacher, Mr. Arai, catches her with a condom during a bag check, he asks Momose to speak privately about such a small condom. Momose's heart is already taken, but perhaps he can help satisfy her body.
Mrs. Mireila and her family won a trip to the beach, and would you know it, Kento tags along for the ride. Although Koume and her mother are more than willing to jump on him at any moment, Komari feels reluctant in making any advances out of fear of inadequacy. But just when she thought that Kento had eyes for her more well-endowed kin, Kento makes a clear confession that it's the flat-chested Komari that truly makes his heart go wild.
Kento seems to be more than just a humble employee at Mrs. Mireila's multinational firm, what with his duties as personal tutor and "babysitter" to her twin daughters Koume and Komari. But far from being innocent, these two little girls are looking for more than just a math tutorial, as they seduce and entice Kento to have sex with them. And like daughter like mother, as Mrs. Mireila also harbors some pent up sexual urges when she jumps on Kento while in an intoxicated state.
Beings from a different world freely mingle with humans in the modern-day vision of the Another World Series. In this first installment, a young boy named Yuu finds himself in a strange situation when a certain Dark Elf named Neiht plays the role of his caretaker. Aside from the usual fare of day-to-day tasks, Neiht seems hellbent in making him ejaculate regularly as a means of calming down certain adolescent “urges”. Will Yuu be able to keep up with the clingy Neiht?