She stays aside and cheers you on

“You feel that, slut?” Himiko tells the prisoner. “Do you feel my husband’s dick? I bet you enjoy having it inside you. I know how wet you were at the thought of being **** by him.”
“No. Stop it.” Doe groans in protest.
“Fuck her harder, John.” Himiko tells you. “Let her feel she gets more than she deserves.”
You obey your wife and give Doe a few hard thrusts. As a result, your captive gives a few short squeals.

While thrusting so hard into Doe, the ebony woman manages to get one of her knees in between you and her. Obviously, she’s trying to push you out of her. But Himiko reaches over and pulls Doe’s leg back to your side.
“Oh no you don’t.” Himiko says. “You won’t be escaping punishment.”
Then Himiko brings her head to Doe’s chest and starts pleasuring the prisoner’s black boobs. You watch your wife’s Asian hands caress Doe’s ebony mounds and even see her take those black nipples between her lips to suck on them. It pains you to admit it, but it seems Himiko is getting even more into this than you are. It kinda makes you feel a little bit jealous.

It doesn’t take too long until, you and Himiko together get Doe to an orgasm. Looks like Himiko understands the female body very well. Not exactly a surprise as she has one herself.
When Doe is moaning out her orgasm, Himiko throws her torso back, causing her hair to come all disheveled and her Kimono to fall open.
“There it is. Proof that you’ve been enjoying it all along.” Himiko yells at the prisoner.
With one hand between her legs and another on her boobs Himiko pleasures herself while hurling more insults at Doe.
“How dare you enjoy getting ****, you dirty little whore. You clearly have no respect for yourself as a woman. You are just a bitch who spreads her legs for every dick that she comes across.”
“No. It’s not true.” Doe pleads.
“Just stop pretending already.” You tell the black woman. “We all heard you scream in orgasm. But if you really want to end this, fear not. I’ll put an end to this.”
“Are you cumming?” Himiko asks.
“No, don’t cum inside me.” Doe begs.
“Do it, husband.” Himiko moans as she starts frantically fingering herself. “Let me see you put your baby makers inside this cum dump already. Breed this bitch.”
Thanks to your wife’s motivation it takes you only a few more thrusts and you start pumping your seed into the assassin. You make certain to groan loudly when you do it, so your wife gets to know when it is happening. Then she in turn orgasms at the sight of the prisoner receiving her just punishment.

After all of you have come down from your orgasms, your wife places her hand on Doe’s underbelly and caresses it.
“Soon this womb will be carrying my man’s child.” Himiko tells the assassin. “And when it is born, we will raise it to be loyal to us. To serve as a guardian and protect us. To do the opposite of what you intended to do. And then we shall do it another two times.”
Doe, who lies there defeated, simply turns her head away from Himiko. You untie Doe’s wrists and you and your wife both leave the cell. On the other side of the bars, both of you straighten your clothes and make yourselves presentable. When you leave, Doe still lies there. Nude, with her legs spread and some of your cum leaking from her pussy.