Reverse violate Castle ～A Succubus Trap

One day, a letter arrived from the village chief.
“Dear Hero
I have a request for you, Hero, and have sent you this letter.
Right now, in our village, a succubus that sucks the vitality out of men is rampaging every night, and all the men in the village are dying one after another.
If this situation continues, our village will collapse.
In order to keep the village alive, I would like you to get rid of the rampaging succubi.
I would really appreciate it if you could help our village.”
You, the hero, have received a request from the village chief and have entered the succubus castle to get rid of the succubi that are troubling the village.
Once inside the castle, the succubi will use all sorts of sexual techniques to try to drain the hero’s energy with reverse, blowjobs, seductive seduction, etc…​