Ayane, a married woman who works as a "swimming instructor" by making use of her past experience. Unhappiness suddenly comes to her. Parents who were self-employed escaped leaving a large amount of debt. Ayane, who was a guarantor, will bear the debt ... Ayane who is trained secretly to her husband, a rope that bites into a swimsuit makes de M sex bloom and she becomes a sex slave ● and continues to serve.