A project for Amateur men to participate! Due to popular demand, here comes the 4th installment! Mari Rika, the super beautiful girl who can do anything, is finally here! After watching the previous works in the series, she is confident that she can do it even more, so this hard mode is only for Mari Rika, who has been carefully selected for fans who have difficulty climaxing and wrote in the questionnaire that they have delayed ejaculation! Despite this, she uses her hip-swinging intercrural sex technique to squeeze out sperm one after another! But what about Mari Rika, who realizes that she might not be able to do it raw at this rate...?