1-6. Mayu-sensei wa H de Komaru (It's a Problem Doing H with Mayu-sensei)
A new teacher recognizes one of her students after the first class. After the student she recognized goes home after an encounter with her, he finds out that she is going to be living with him.
7. Zange no Mado kara
8-10. Ojou-sama Tokkyuu (Lady Express)
A rich girl has to take the train to school one morning because the family car has broken down.
On the train, she realizes she's in a car filled with molesters...