Oh man, you could, very easily. Letting a Yuffie into your head is the easy part. Once she is there she will fill all the shelves with Materia, rearrange the furniture, keep her shuriken in the silverware drawer and eat all your cereal. And you will still love her anyway. XD Yeah, I always have her in my party too. She and Nanaki just kick so much ass. 8D

OH NOES MY SEKRITS