Late one night, Iroha becomes increasingly irritated by her neighbor's loud sexual moans. Unable to endure it any longer, she storms over to his apartment to complain. The moment she comes face to face with her neighbor's huge cock, a storm of conflicting emotions—anger, excitement, and arousal—begins swirling inside her. Sensing her turmoil, the neighbor slowly closes the distance between them, drawing Iroha into repeated sexual encounters. As their feelings grow deeper and more intense, their relationship takes on an increasingly complex and forbidden nature.