Ten years after our last meeting, my cousin Ai Hoshina came to stay at my all-male household. She had grown into a stunning beauty, always wearing short skirts that constantly exposed her panties. What's more, every single one of her panties was a thong, creating an irresistibly seductive sight. For some reason, she kept provocatively flashing her underwear at me, and unable to resist the temptation, I eventually gave in and started a forbidden relationship with my cousin.