"Even if I say I want to marry you, your cock still isn't good enough!" She laments that her boyfriend's premature ejaculation leaves her unsatisfied. She takes on the challenge of reshaping his penis into her ideal strong version through a month-long ejaculation control training. Although bareback creampie is forbidden due to pregnancy risks, she craves constant pleasure and demands unprotected sex. Just before climax, he's forced to pull out roughly, subjected to repeated orgasm denial and excruciating tease-and-torture. "Only three more days until creampie is allowed! Keep enduring, okay?" Will he overcome strict ejaculation control and win her hand in marriage?