The reason why Ishii, a troublesome school dropout, participated in the school trip was because of his homeroom teacher, Chitose. She has a voluptuous body that is hard to believe she belongs to a teacher. Ishii was plotting to somehow get his hands on Chitose's body on this occasion. At that time, Chitose came to Ishii's room to persuade him, who rarely comes to school. "School isn't just about studying. Why don't you come little by little?" "Then... please teach me things other than studying..." Ishii had reached his limit. Ishii squeezed Chitose's big breasts, which were full of openings...