Aoi, who is around her age, is popular with boys because of her cuteness and good personality. Her older brothers, who had loved Aoi for a long time, began to seek Aoi's body from jealousy and her deep affection. Aoi is her brother and sister and she thinks it is not good to have a physical relationship, but her sense of immorality and guilt amplifies her stimulation, and SEX with her brothers makes her happy I would drown.
