My Girlfriend's Older Sister Is A Tempting Slut. Shunka Ayami (2013)

Sinopsis

Shunka Ayami, who is an actress who belongs exclusively to Prestige, seduces her younger Stepsisters boyfriend! The boyfriend cannot resist the temptations and fucks her when his girlfriend is not looking! You cannot afford to miss Shunka devouring him as she constantly takes the lead in cowgirl position! Once his girlfriend enters the scene and starts a 2-on-1 competition for obedience, they get absorbed in some pleasure with lots of jealousy!!