The reason why truant student Ishii joined the school trip was because of his homeroom teacher, Chitose. Despite her appearance, Chitose possessed an incredibly voluptuous and alluring body that defied the image of a typical teacher. Ishii secretly hoped to experience Chitose's body, even just a little, during this opportunity. One day, Chitose visited Ishii's room to persuade him to return to school. "Going to school isn't just about studying. Why don't you try coming back, even if it's just a little at a time?" she gently encouraged. Ishii replied, "Then... why don't you teach me something other than academics, Teacher?" Unable to resist his words, Chitose's ample, exposed breasts were soon being passionately groped by Ishii.