Anna

Please note that everything in the description below has already happened to Anna at the start of the game. It is mostly told to us and we do not get to see Anna's mind control process during the game. She is Dr. Thompson's loyal sex slave from the start of the game and it is implied that Dr. Thompson has just finished Anna's corruption process when the game first starts.
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Anna is Dr. Thompson's receptionist for Dr. Thompson's therapy office.

She was an aspiring psychologist that originally started working with Dr. Thompson as Dr. Thompson's assistant. She did this to get more training to fulfill her goal to become a full recognized psychologist.

Unfortunately for Anna, Dr. Thompson used this close working relationship to mind control Anna.

As part of Anna's mind control, Anna was made to abandon her carrier asperations. Anna was also made to get breast implant plastic surgery to make her breasts large and sexual. Additionally, Anna has gotten her breasts pierced with barbell piercings upon Dr. Thompson's orders.

All of Dr. Thompson's mind control and therapy has resulted in Anna turning into a large breasted bimbo. Anna has now been made to enjoy how her large breasts make every act sexual for her.

She is now a complete sex slave to Dr. Thompson and obeys any order given by her without delay.

It is noted that Dr. Thompson now pays Anna very little salary, in Anna's new role as a receptionist, and she enjoys that she has turned Anna into her submissive sex slave.