Mashiro is caught writing an exchange diary during class by his homeroom teacher, who dislikes him, and ends up having to give him a sermon after school. - Mashiro's nervousness gradually makes him want to urinate as he hears the teacher's sermon. - Mashiro reaches his limit and pees. - The homeroom teacher couldn't contain her excitement at the sight, and ended up sucking her pee-covered panties, licking her pussy, and raping her. - Furthermore, Mashiro is confined in a warehouse and subjected to further torture. - Out of fear, Mashiro urinates again.