What is anti form

anti form is a drive in which sora changes into a heartless. it can not be permanatley put on your drive list. it is based upon anti points which you receive each time you are hit. once you have a certain amount of anti points you will turn into the anti form when selecting a drive. going into final form will decrease your anti points drastically. if you don't believe me go on youtube and ask how u get anti form. there is a video demonstrating it.