Introduction: A shadow was currently sitting in a thin electric wire amidst the destroyed Z city, wearing ripped jeans and a topless torso that was filled with horrendous scars, despite the appearance, the guy was still 17 years old but has deep mysterious eyes accumulated by millions of battles that happened everyday. The person sighed as he gazed through the burning, destroyed city and countless of corpses scattered everywhere.   After a long time of serenity, he muttered.  "So tiring. Resting for a while may be good."...