The nun with black stockings is actually a boy?

Sister Helen of Constantinople, the monks' impression of her is that she is both lovely and powerful, but a little out of tune.
But one witch knew that Helen was a succubus.
Bishop Helen, the dream goddess of players, is the representative of the pure and lovely style in games.
But there was one princess who knew how despicable Helen was.
Warmaster Helen, the legion he leads on the expedition is immortal and endless.
But one female player knew that this was a shameless collaboration between Helen and the Fourth Calamity.
Saint Helen...
"Lady Saint, you don't want people to know that you are a boy, right?"
A certain spirit whispered in Helen's ear.
Simple version: A story about a nun (?) cooperating with the player (cheating and deceiving).