Hiro, a small boy summoned to another world, discovers a taste for a special kind of milk provided by Bell. This discovery leads to a secret and intimate arrangement where the two engage in mutual pleasure. As they commit to this daily routine, Hiro begins to show signs of physical growth and improved health.
After registering on a mysterious website, Toru Negishi unexpectedly summons Nia, a spirited nekogirl from another world. Although Nia is initially determined to return home—a process that requires her to become pregnant—she quickly becomes enamored with the food and comforts of the human world. Following a passionate encounter fueled by Nia's heat, she decides to forgo her return and chooses to live with Toru as his companion.
Tatsuomi awakens in a mysterious world after being saved by Rupia, a beast-girl who cured his illness using her nutritious eggs. As he regains his health and develops a deep physical and emotional connection with her, Tatsuomi balances his university life with his time spent in Rupia's company. Upon learning that Rupia's species mates for life, the two decide to commit to one another and share a future together.
Takeshi continues Pokora's "training" to help her maintain her human form under intense stimulation, using the promise of special udon as a reward. After successfully enduring vaginal intercourse, Pokora is pushed to her limits with anal stimulation, eventually succumbing to pleasure and losing her transformation. Although she is rewarded with dinner, her request for more "training" in exchange for more food leads to a surprising punishment from Takeshi.