an artificial computer was constructed in a cave on the Himalayas,used to control most devices on earth,but it came to a final decision that humans are low in efficiency.As a result,it secretly started project "Replacement",replacing human with robots with the exact same appearance,no one had noticed the changes yet.

Her parents both worked in far away places,leaving her in the house alone,making her a perfect start for the project.She is now 16,in high school,her desk mate Bobby is a shy boy who doesn't talk much but cares much about her.

You are the first android for the project,known as the "pioneer android",and your appearance depends on your persona.

Bobby watches you settle down in the seat next to him as usual,now realizing his dear desk mate is now replaced by you,a complete machine,he speaks to you after a yawn Bobby:So...how was your...sleep last night?