You are on your way back home,you are a 16-year old schoolboy,1.8m height,you live with your 2m tall elder sister luna.You two live seperate from your parents.A lot of boys of your age were being kidnapped by bad men,transformed with syringe into android,YoRHa Type A No.2 (A2) android with monstrous size curves as experiments,after that,being sold as slaves.You will meet a female scientist,Mayura she will help you escape after you beome an android.You did not notice a van approaching you.