Travel through the adult game and build a harem

What karma had I brought upon myself? Deciding to refrain from wishing, I suddenly found myself the protagonist in this damn adult game. Couldn't this have happened sooner? No, someone decided to wait until I, a lonely thirty-year-old man, lost my health from indulging my whims before sending me to the harem! Seeing several figures in front of me, I realized that I had the will but no power..... you can't bully people like this!
Realizing that I should purify my heart and temper my desires, I decided to follow Tang Sen's example. Even when faced with the temptation of a spider's den, he was able to preach Buddhist scriptures while remaining calm. So, I calmly address the fairy: “Good lady, please allow this humble monk to pass.”
Suddenly, the System informed me that if I couldn't unlock the erotic plots, it would result in a bad ending and I would be forever in the world of the game.
Holy crap! What kind of tyrannical rules are these?
So here I am, expressing my disappointment, trying to save my kidneys, and silently beginning a life of pleasure (and physical exhaustion) in this adult game.