Himari, the quietest student in the school, makes a fierce attack on a teacher who is nearing retirement and whom she has secretly had a crush on! On the first night, she sneaks into the teacher's futon as he goes to bed, cutely saying, "I just can't sleep..." and whispering dirty words while pressing her big breasts against him to seduce him! Furthermore, she forcibly takes off the teacher's pants, who cannot hide his agitation, and destroys his reason with a blowjob technique and sex that is unimaginable from her usual modest personality. During the 2-night, 3-day school trip, she sucks out all of his sperm!