[Original: Mahiro Otori. A live-action version of the popular harem series that has sold over 100,000 copies! ! ] Human sweat and body fluids contain pheromones... Men and women can't resist the scent of seniors they meet in the summer library... Invited by the scent, it is a voluptuous and lewd world where you are entwined and captured. A senior, a childhood friend, and a sister-in-law... Summer memories of four people dripping sweat, sperm, and love juice, and devouring each other like crazy with big breasts and big butts.