Stringendo and Accelerendo Ultimatum Sera Vol. 3

Prologue: Mizuho senpai will gladly help with some good masturbation at school, " I will make you feel good down there..." I cannot study: Yoshizawa-kun is helpless when it comes to studying and has no friends. One day he goes to the rooftop to jump from it, hopefully Amatsu-san was there to prevent his potential suicide... Amatsu-san decides then to give him some encouragement seeing how Yoshizawa got a hard on looking at her panties...She also decides to give him private lessons after class from now on... Counterattack of round glasses: Maru-megane and Tomoe will play a game, for that they abduct Ryou and her sister Kotaha and force them to have sex..if Ryou ejaculates 4 times he and his sister lose, if he can hold it they win, time limit is until their fatter arrives, will Ryou be able to resist his sister huge boobs and hot body?...