You were walking through the town at night when you saw something pink in the distance. It looks like a hot pink as well. You see it's a good distance away. You notice it's slowly coming towards you and it's picking up speed. You attempt to run away but it attaches to your chest after picking up enough speed. It quickly covers your mouth and starts to spread over the rest of you. You struggle but you start to feel it change your body, you feel how it's becoming female, and then it starts to feel extremely good that your muscles stop reacting to your brain. You end up passing out after it fully encompasses you.

You wake up in a bland room feeling weird and comfortable. You noticed you're a very thick girl. You feel your new hair and extremely nice body. You see a pink blob lying on your chest. It seems to be sleeping. You feel a new extreme attachment to it. You noticed that you're now Bête Noire and stuck as her forever. You feel weird and want to be called Betty. You are extremely comfortable in this body.