Scanned- A reader x IQ story

Y/n Bosak is the adopted brother of Zofia and Ela Bosak. After being an orphan on the streets of Berlin until he was 7, Y/n was adopted by a family run by a military father with two daughters. After growing accustomed to a family, Y/n adopted their soldier like views and followed in his sisters footsteps by attending a prestigious military academy, along with them. After scoring top marks and finally being able to graduate, Y/n was accepted into Rainbow as a new counter terrorist. Weird thing though, He won't be with his polish sisters.

Y/n Is 2 years younger than Ela and 7 years younger than Zofia.