The popular FANZA indie comic series with more than 120,000 downloads returns in a long-awaited live-action sequel starring porn actress Riho Shishido. Watanabe becomes uncontrollably aroused through nipple stimulation, so she announces a month-long nipple-abstinence training program to cure the problem. Resisting arousal proves harder than expected, but she refuses to quit as the exercises grow steadily more extreme. Then she notices a strange change in her body—leaving the success of the training uncertain.