My little brother was born, and my mother Minori's boobs got bigger than before. I couldn't take my eyes off Minori's chest, even though I thought it was a bad thing for her son Yoshio. "I'm sure those breasts are full of breast milk..." Thinking so, the delusion spreads more and more. I want to be pressed by those boobs! I want to bathe in breast milk while feeling the milk pressure! Fascinated by Minori's breasts, Yoshio finally opens the forbidden door...
