Childish Yet Dangerous Mysterious Lady In Pink

What if one day you meet an angel faced girl with a childish and joyous personality But have a dangerous and cold aura around her that could make you shiver just by hearing her name What are you going to do??? Would you like to be her friend or simply just one of her enemies?? What if she ask you to join her in her dangerous adventure?? Would you like to come?? Or you'll just going to watch her being hunt by her past and bring the danger in the present?? Would you let her???