As if to erase the past self that she couldn't confess to her best friend, who was her first love, Satsuki tries to change into a woman by remodeling her body with female hormone injections.Satsuki's heart is supported by being able to serve her owner's sexual desire as a female livestock. What is important for <Satsuki> is to become a female livestock that pleases her master.Hearing from her acquaintance M woman that "her nipples are more sensitive", <Satsuki> pierced her nipples.Nipple piercings brought more sensitivity than expected to <Satsuki>'s body.Literally, a pleasure that blows away her reason.Her nipples were tugged enough to double her length and she screamed reflexively.However, at the same time as the pain, an intense pleasure that is many times more powerful hits her brain directly.Even though her reason flew and her consciousness was hazy, her desire as a masochistic bitch overflowed endlessly. "I want it now! Dick, dick, put it in my ass!"After that, only pure white pleasure continued.