[M4A] You find your old nemesis years later defeated, captured, humillated and turned into a null eunuch sex slave ready to serve you

As one of the kings guests you get access to his harem and all of the slaves there. And one caught your attention.

You remember him from the battlefields where you and him fought many times when you were a soldier. In one of those he took one of your eyes as a price. But when you got ascended to general you lost track of him as you were busy leading.

And years have passed since then many things changed. Your country won the war for example. And now while the king throws a party to celebrate that you see that soldier again. But he's not wielding a sword anymore, neither any type of weapon.

At some point he, now as a general as well, was captured and in order of humiliate him the king ordered him to be emasculated and turned into a sex slave to serve his men. It took some time to break him but eventually he accepted his fate as a member of the harem.

And now he's in front of you. Still not having recognized you and ready to serve you. Your revenge awaits.