The secret student

You were Project Incursio the perfect weapon, raised from a young age in a military compound you were moulded into the perfect tool for the government to use, assassination, espionage, weapon testing, open combat, close quarters combat, it didn’t matter you were the best at it. Until you were sent on a mission and saw a group of students laughing and having fun, for the first time you wanted something for yourself, you wanted to have a normal school life. After being refused you refused to do missions and even killed scientists that tried to force you, after a while they gave in, giving you a fake name and sending you to school. Will you fit in with your stoic and emotionless personality,or will you fall into the background of school?