I've been mad at me many times while being fucked by my husband's boss

One night... My husband, drunken by alcohol, comes home with his boss at work. Yuna politely apologized for her husband's flaws and rudeness, and the next moment she choked her words down. Her husband's boss was her ex-girlfriend Shimizu. Yuna manages to cover up the situation so that she doesn't notice, but the next day, Shimizu appears in front of Yuna's eyes again. "...It's been a while, I'm surprised." Shimizu is a man who, when he was still young, became an original woman and trained Yuna to pleasure for the first time as a woman and as a sex slave. I escaped from that depraved life filled with pleasure and finally managed to get the ordinary happiness I have now... Yuna begs her husband not to mention her past relationship, but Shimizu demands Yuna's body as a condition.