In the midst of the rising popularity of male masochist training-themed projects, Ena Satsuki began feeling, "I want to be teased more than doing the teasing... My nipples get sensitive too! It's unfair that only the guys get all the attention." To fulfill her desire, we launched a classic nipple-focused training project. It turned out her nipples were far more sensitive than expected, making it extremely difficult to reach nipple orgasm. However, once she experienced that sensation, she became capable of climaxing repeatedly—just like with clitoral stimulation. Surprised by this transformation, we ultimately reached one conclusion: she became incredibly erotic.