"It hits deep inside me!" Just before ejaculation! A thrust from behind! It feels so good that it's so good that it's fired back! 50 consecutive shots.

Emphasis on ease of masturbation! Only scenes where you ejaculate from the intense thrust just before firing are carefully selected! When the high-speed piston starts in the back, it's signal to finish! A 50-corner corner where you can climax at the same time as the male actors and actresses!