My aunt Ruka, my mother's younger sister, recently divorced and received a house as part of her settlement, so I went to help her clean it up. Despite her young age, she has a beautifully gentle presence. But even knowing she's my aunt, I can't help feeling nervous and excited around her—especially by her huge tits, which are impossible to ignore even through her clothes. One day, I suddenly heard a scream from the bathroom and rushed over in panic, only to find Ruka drenched in water, her wet clothes clinging to her body and revealing her breasts. Her appearance shook me even more, stirring up uncontrollable desire.