It started with some guy brainwash the heroine, practically raped her and gave her to protagonist. He later learned how to MC by going into a room in someone's mind and alter it.
It started with some guy brainwash the heroine, practically raped her and gave her to protagonist. He later learned how to MC by going into a room in someone's mind and alter it.
You might be thinking of Noble Truth's Creed series about a mind control chip -
https://storiesonline.net/series/861/the-creed-series
It sounds a lot like The Addicted Natural by blackknight99. https://storiesonline.net/s/46353:i
It involves hypnosis and finding a hidden room inside her mind.