Veil of Shadows: Sakuya Sumeragi x (OC) Male reader

Akiri and Sakuya are childhood friends. but one day they were being chased by KNightmares. The Knightmares chased them all the way to a cliff and fired at them making an expansion happen that got them separated from each other and years later Akiri was forced to Join the Neo Britannian Empire and to be in Einberg. even though he was half Britannian and half Japanese he was able to get in because there was a glitch with the machine that they were testing him on what he is and it put him as a full Britannian. after 3 years, he was promoted to Schwarz Knight and right after he got promoted Akiri was stationed at Abashiri Prison for a few months because Seven Shining stars were trying to raid the prison so many times. but what will happen as Akiri stays there and the Seven Shining stars with some help by The Nameless Mercenaries brake in and he bumps into a certain someone from he childhood. Will he help her out or will keep his honor in the Neo Britannian Empire? (read to find out what happens.)