[Kyouya (kyou konogoro)] Megami no Onee-san-tachi ga Nukinuki shinagara Pakopako shite kureru OneShota Hon (Hyperdimension Neptunia) [tabibit0]

Purple Heart and Green Heart corner a nervous young boy between their voluptuous, big-breasted bodies for a very hands-on course in sex education disguised as semen extraction treatment. Whispering to leave everything to them, the doting goddess onee-sans smother his hesitation with soft, bouncing breasts and competitive affection, guiding him through clumsy first times into increasingly intense, pleasure-drunk sessions. What starts as a caring cure quickly reverses as the sisters find themselves addicted to the treatment, returning day after day for more until indulgence becomes the real purpose.