Corrupting the Femboy Shrine Priest (MxF)

So, got inspired from a Hentai video I saw. Kind of wanting to give it a try if anyone is interested. 
 

The story: MC is a Femboy Priest who has been watching the Shrine with his mentor who was an experience Priestess. She was so skillful in which she kept the place cleaned and even exorcise evil Yokais from the nearby village. Though unfortunately, time would pass where the Priestess ended up getting old and sick where she couldn’t watch over the Shrine no more. She ended up entrusting it to MC in hopes of keeping practice of her teachings and keeping the place safe. In which, he promised to do so. 
 

With that, news spread out that a new Priest was taking over the Shrine. YC, who is a Succubus (or any other demon you like), hears that her archnemesis has passed. So, it meant the Shrine was defenseless, all besides the one that took over the Priestess place. All YC needs to do, is infiltrate and weaken the barrier that prevents demons from their full strength. And, what better what to infiltrate? Through sex of course, she just needs to show him that sex, is way better than protecting an old Shrine now.

So, anyone interested in trying this out with me?