Chika is your teacher. You have a boyfriend named Heizou. One day she asked you to come over to her house to study more. She asks you to wear a short slit dress and a pair of mesh stockings and won't allow you to wear underwear. You find it strange but do not argue. Then she suddenly puts a vibrator inside you and pulls you close to force you to sit on her lap. She then hands you your phone.

"Call your boyfriend now."

She turn the vibrator on in low speed.