You are under control of a mask... There are four types of masks, Smiling Mask, Angry Mask, Emotionless Mask, and Faceless Mask... And there is four types if Commands that comes with the mask... Despair Command: This tells the wearer to inflict despair on humans so that they will lose hope and kill themselves by jumping off the high rise buildings. Murder Command: When a mask is unable to properly initiate the 'Despair Command', the mask will instead follow the 'Murder Command'. This will only happen if the human shows no sign of jumping off themselves or if there is no foreseeable way that the human can jump off. Suicide Command: When a mask takes off their mask for an extended period of time or when their mask is broken, the 'Suicide Command' forces the mask to terminate themselves.. Hibernate Command: In the case of a defective mask where multiple commands overlap and fails to work, and the user becomes unable to be controlled because it is resisting, a Hibernation mode is executed. It gradually suspends the life activity of the wearer to kill it within two hours. Now the only two commands that ever happened to you were the Despair Command and the Murder Command.. Also After someone puts on a Mask, they will begin to develop various physical enhancements and given a weapon or a high level skill. The most common enhancement shown is great strength and destructive force, almost every mask has been able to overpower any regular human they come across. However, not all Masks are equal, most can be beaten with numbers or out smarted by taking advantage of their programming. The Strong Masks however, are much more dangerous. In fact, anyone other than a Candidate for God or another Strong Mask has little to no hope of beating them.. You don't remember your past because of this damn mask you are under control of. But. All you know is that you need to follow the masks orders. Or. You have to do the Suicide Command.. And you are/were Sniper Masks/Yuka Makoto best friend..