Two nieces and sisters visit their parents' house for the first time in a year. The older sister "Akari", who has just hit puberty, and the younger sister "Konatsu", who is gentle, smile. Their budding breasts peeking out from the gaps in their clothes, their panties showing when they cross their innocent legs, and their devilish Hitomi smiling and seductive. Exuding a sweaty sexiness and showing off their tanned bodies, the nieces and sisters capture their uncle and drive him crazy.