During a record-breaking summer heatwave, my mother left me, a high school dropout, at home while she went on a trip. During this time, my aunt Yuka took care of me. Living under one roof with her, I couldn't stop my heart from racing as I saw her sweaty body. One day, after returning from cram school, Yuka asked me, "Takashi, are you interested in girls?" Before I could answer, she smiled seductively and pounced on me...