He vigorously washed his stepsister's clothes until her huge breasts shrank! The stepsister, who had been complaining while exposing her breasts, suddenly became gentle and affectionate during sex after discovering his erect penis! SCOP-836

The lazy, stay-at-home guy is constantly being nagged by his stepsister to "help with the housework." So, he mustered up the courage to start the washing machine, only to accidentally wash both his clothes and his stepsister's clothes together, causing them to shrink to an unbelievable degree…