The Veteran - ( highschool gangs au )

When Shoyo was 7 him and his parents were going on a trip to vietnam but unfortunate events happened which led to Hinata being the only sole survivor of the plane crash.
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many event led to another and because of his situation he was forced to kill somone for the first time. The island which the plane crashed on was at War.His environment made him grow up in an scarely increasing rate....
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As Hinata grew older his emotions started vanishing one by one.
He was once dragged in an army where they forced children to fight, hinata didn't want to die in such place so trained himself everyday, risking his life every moment and killed people for or that threaten his survival. After 7 years Hinata got out of the army killing everyone and letting the other children besides himself free. He became a mercenary, who then was hired to save some military men jailed in enemy base. One thing led to the other after he saved the chief he was taught about how the modern world is and how to use technology and other modern appliance and how to hold conversation. He was then sent home to his Family In Miyagi, Japan where his 4 year old sister is, Hinata Natsu who is now 13 years old living with her grandparents. They were shocked to see him alive thinking he had disappeared and died in that plane crash 9 years ago.