Sisters who develop romantic feelings for their older, admired brother. The elder sister 'Sumire' grows quickly and has a hairy body, while the younger sister 'Ichika' is innocent and energetic. Since childhood, they have been teased by their cousin, with pleasure etched into their small bodies. As they enter puberty, the sisters also start teasing their cousin! They use their sun-tanned bodies as weapons, exposing themselves to provoke desire and drive him mad.
