The 2nd Floating island in the sky, Which holds the only Humanity on Earth. Earth became unhabitable because of an accident. An atom bomb exploded while trying to destroy it and it lead to all of the atom bomb to explode.
July 6 2041
First day of High School at Shison gare High, Rein Jokitachi who is a first year at that high school. He lives near close by to the school in an small apartment by himself. He shifted his house for High School and he don't live with is parent. Rein is a very intelligent person and has knowledge of technology, he made a device that can crack password, hack, take control of other divices and lots and lots more. Still he is cold hearted he never talks to anyone he never bothers about other nor he helps anyone.
One day while going home from school he met with an accident. When he woke up at the hospital he didn't realize what's going on. "What happened why am I in the hospital why am I covered with bandages. Then someone replys "You met with an accident" and I the one who called for the ambulance.
But.. but.. who r u ? Hhhh ! you don't know me my name is Sakura Yuii I'm your classmate. I seat just next to you, and you don't know me. Oo well Anyways doctor says you can go home now and if you want I can drop you to your house.
"No thanks I can go on my own" he said and left the hospital and went home. In the mid way going home that girl showed up from before and wanted to walk together. Rein didn't care about it and walked together.