One day, Mirei, a freshman who couldn't decide on club activities at school, is fascinated by Saya's big hips while training at the tennis club. Saya of Gachirezu puts her lips on Mirei who immediately submitted the notification of joining the club. After a thick kiss that sucks in the tongue, Mirei who entered the club is made to make a facial compression cunnilingus in spite of the club room. In the infirmary, face-sitting cunnilingus, shelling, mutual fingering in the classroom, Tomirei is getting more and more addicted to lesbian acts.