Karai Ichito is a student at the a special school, HOUSHI Gakuen, where teach the skills of sexual service to men. He is good at throat-sucking and is paired up with his classmate, Shuji Mito, who is famous for his vacuum service. Every day and every night he is embraced, but all he can think of is Mito. Mito and Karai have feelings for each other, but for the next ten years after graduation, they have to be with someone else. Mito and Karai make a solemn promise to meet again, but...?
