Taro Yamada-The Soldier of Akademi

Taro Yamada a thrid year Student at the prestigious Akademi Academy, a loner by all acounts with only his childhood friend keeping him company during his time in Akademi but underneath his introvert side is a Veteran Soldier of the Infamous Canton 36th Scout Rifle Battalion; An Infamous/Famous Battalion known for their Ability to Hit the PLAGF Hard and fast then disappeared along with their record of Victories, these men and women who made up the Battalion called themselves the 'Guangzhou Milita' but around the world they're known as the 'Guangzhou Tigers'

But a Certain Yandere forced his hand he needs to use his skills and will power to protect those he loved. How Akademi reacts when a Soldier is right under their radar, how would a his Childhood friend react when she finds out her 'Crush' has a bloodied past and will he keep her friendship.
the one he loves the most?

I'm bored and decided; Hey why not make a yandere simulator Fanfiction about Senpai aka Taro Yamada being a Former 14 year old Soldier in a Regiment during a civil war that he had gotten himself stuck in and fought there for two years as a Scout/Spotter (Yes that a FFL Sniper but just he used old French equipment)for Faction that have 0% of winning but due to luck, Nationlism and enemy being Incompetent they somehow won. After the War Taro and return to japan without anyone knowing, and pretent to be normal. (Thanks to his time in the civil war)

(ALSO NO SHIPS BECAUSE WTF IS WITH THE CRINGE.)