[Sanada] Zubo Xubo Ero Apuri 17 ~kyokushou no onna no ko to tokudai no are~

Rika catches her teacher with compromising photos on his smartphone and swipes it as blackmail, but the educator flips the script with an app that shrinks her down to pocket-size. Stripped and stranded in his giant hands, the busty schoolgirl gets fingered mid-phone-call to her brother, inspected from every angle, and thoroughly punished with his tongue while her cries for help go unheard. With the hostage phone lost somewhere in the school and her body completely at his mercy, Rika learns what happens when a super tiny girl ends up in a super big place.