A collaboration between popular author Kuroneko Smith and MOODYZ! Kohei goes to visit his mother's sister and her husband and meets his aunt for the first time in five years. She is just as kind and beautiful as he remembers her from his childhood. However, one thing that was different from back then was that he felt her feminine charm... In his adolescent eyes, his aunt appeared as a "woman." Her voluptuous body was poisonous to the eyes of a boy in his prime, and he began to secretly fall in love with her, which, combined with his sexual desire, led him to act impulsively.