In exchange for keeping the secret of Tomomi-senpai, aka “Bonyuu-chan,” a steamy love triangle begins between Senpai, her little sister, and the protagonist. With the combination of breast milk nipples and inverted nipples, the two become incredibly engaged in a threesome where they are constantly getting creampied.
To save her cute little sister who is in heat, and to shoot breast milk from Senpai’s gigantic breasts, they engage in a threesome sex with the protagonist’s help. This third episode’s theme is about “Breast Milk Threesome Sex to the Rescue!”.