Osamu was deeply shaken when he saw his stepmother Maki doing yoga. It was a common sight in any household, but Maki's body was just too erotic. Her supple curves and the streak of sweat running down her chest, exuding a faint feminine scent, shook the rationality of Osamu, who was in the midst of puberty. Unable to resist, Osamu peeked on Maki as she finished yoga and went into the bath...