Misaki (pseudonym) is a college student being trained by Morishima, her apartment landlord, following a certain incident. She is now being lent out to Morishima's friend's house. The day's main events begin with anal appreciation, progressing to artificial flower insertion as a human vase, followed by warm-water enemas and culminating in public defecation—an experience where shame and pleasure intertwine. Throughout this process, her demeanor is portrayed as a constant blend of tension and arousal.