Coming to Tokyo for job hunting, I ended up staying at my cousin's place for about two weeks. Seeing her again after so long, I was struck by how much more beautiful she had become compared to my memories. Spending time with her felt less like ordinary family interaction and more like an experience stirring deep emotions within me. When helping carry my luggage, I accidentally caught a glimpse of her panties, shocked by the unexpected flash—and my heart raced at her seemingly careless exposure. But this vulnerability turned out to be no accident; I soon realized her teasing was intentional. My cousin’s panty flashes began to deeply affect me, stirring raw instinct. The intersection of her feigned innocence and deliberate seduction becomes the ultimate highlight of this work—guaranteed arousal from the tantalizing, exposed moments she creates.