You're so beautiful I couldn't help myself

You tell her how you always have a crush the first time you saw her, and you found her so irresistibly alluring that you couldn't bear not to have her - or words to that effect.

She's shocked that you would openly admit wanting to rape her. You're surprised at yourself for admitting any of that to your victim, but you didn't lie, so that was alright in your book.

"That's wrong!" she said.

"Why?"

"You didn't ask for my permission,"

"I did, didn't I?"

"I said 'No'."

"You did." you confirmed. "And I offered to ask your husband as well, but you didn't want me to. So, what's the problem again?"

"You fucked me!"

"I did, because I wanted to," you say.

From the information you had on her, Saeko was unhappy with marriage with Yuki. However, societal pressure meant she had to stay wedded to the man as getting a divorce would affect her reputation. Despite his perversion, Yuki had projected himself as a good man and a respected leader in the society. Feeling trapped in the marriage, Saeko wanted an outlet for her to let out all of her frustrations and disappointments. Normally, a wife or a husband in such a position would engage in an affair. But not Saeko, as she was an upright person; playing the role of a 'good wife' meant she had to be careful of her conducts all the time.

But, if someone came to the house and took her without a permission, that was something else together. Since Saeko was tied up and then raped, she couldn't do anything to prevent her rapist from having his way with her. Since Saeko was raped, no one would question her if she enjoyed the sex involved. That way, if someone found about what happened, Saeko could simply deny her involvement.

When you tied her up, you purposely left the bindings loose so that Saeko could free herself anytime she wanted to. The fact that she didn't not only tell you she was willing, but also, she was excited by the whole thing. Despite that Saeko had to offer a token resistance to you.

"You've raped me and got what you wished for." Saeko said. "What now?"