I found a website called "Imouto Catering" and although I thought it was suspicious, I followed it... What appeared was a beautiful girl with a plump baby face and big breasts wearing a risque outfit! What's more, I was allowed to do whatever I wanted, which is like a dream! So I got to enjoy everything from my little sister "Ruka"'s H-cup huge breasts to her shaved pussy! "Today I'm your little sister."