Why does that mean one has to be fake though?? We already know that artificial body tech is possible because Y's other student uses it and presumably learned it from Y.... couldn't they both just be Y but the one with the tattoo is marked as the artificial consciousness extension?
@codetaku Because how they act, we, the ones that "think" there's 2 "Y" have noiced that both "Y" have oposing ideals, one wants great dead 100% while the other one need great for the revival of bear. And also the personalities are really diferent. as simple as that
(don't read unless you want spoilers)
Later on it's confirmed that the 2 y are indeed diferent